Redundent interface build

[yswhynot]

For the problem mentioned in #1046.
The log from open_ros_bridge package:

Not searching for unused variables given on the command line.
-- The C compiler identification is GNU 4.8.4
-- The CXX compiler identification is GNU 4.8.4
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Using CATKIN_DEVEL_PREFIX: /home/yisha/workspace/jsk_ws/devel/.private/openrtm_ros_bridge
-- Using CMAKE_PREFIX_PATH: /home/yisha/workspace/jsk_ws/devel;/opt/ros/indigo
-- This workspace overlays: /home/yisha/workspace/jsk_ws/devel;/opt/ros/indigo
-- Found PythonInterp: /usr/bin/python (found version "2.7.6")
-- Using PYTHON_EXECUTABLE: /usr/bin/python
-- Using Debian Python package layout
-- Using empy: /usr/bin/empy
-- Using CATKIN_ENABLE_TESTING: ON
-- Call enable_testing()
-- Using CATKIN_TEST_RESULTS_DIR: /home/yisha/workspace/jsk_ws/build/openrtm_ros_bridge/test_results
-- Looking for pthread.h
-- Looking for pthread.h - found
-- Looking for pthread_create
-- Looking for pthread_create - not found
-- Looking for pthread_create in pthreads
-- Looking for pthread_create in pthreads - not found
-- Looking for pthread_create in pthread
-- Looking for pthread_create in pthread - found
-- Found Threads: TRUE
-- Found gtest sources under '/usr/src/gtest': gtests will be built
-- Using Python nosetests: /usr/bin/nosetests-2.7
-- catkin 0.6.19
-- Using these message generators: gencpp;genlisp;genpy
-- Found PkgConfig: /usr/bin/pkg-config (found version "0.26")
-- Checking for module 'openrtm-aist'
--   Found openrtm-aist, version 1.1.2
-- Checking for module 'openhrp3.1'
--   Found openhrp3.1, version 3.1.9
[rtmbuild_init] Building package /home/yisha/workspace/jsk_ws/src/rtmros_common/openrtm_ros_bridge openrtm_ros_bridge
[rtmbuild_init] - CATKIN_TOPLEVEL =
[rtmbuild_init] - idl2srv_EXECUTABLE     -> /home/yisha/workspace/jsk_ws/src/rtmros_common/rtmbuild/scripts/idl2srv.py
[rtmbuild_init] - rtmskel_EXECUTABLE     -> PATH=/usr/bin:/home/yisha/workspace/jsk_ws/devel/bin:/opt/ros/indigo/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games;PYTHONPATH=/usr/lib/openrtm-1.1/py_helper:/home/yisha/workspace/jsk_ws/devel/lib/python2.7/dist-packages:/opt/ros/indigo/lib/python2.7/dist-packages;/usr/bin/rtm-skelwrapper
[rtmbuild_init] - rtm_idlc               -> /usr/bin/omniidl
[rtmbuild_init] - rtm_idlflags           -> -bcxx;-Wba;-nf;-Wbuse_quotes;-I/usr/include/openrtm-1.1/rtm/idl;-Wbuse_quotes
[rtmbuild_init] - rtm_idldir             -> /usr/include/openrtm-1.1/rtm/idl
[rtmbuild_init] - rtm_cxx                -> c++
[rtmbuild_init] - rtm_cflags             -> -Wall;-fPIC;-O2;-I/usr/include;-I/usr/include/coil-1.1;-I/usr/include/openrtm-1.1;-I/usr/include/openrtm-1.1/rtm/idl
[rtmbuild_init] - rtm_libs               -> -luuid;-ldl;-export-dynamic;-Wl,-z,defs;-L/usr/lib/x86_64-linux-gnu;-lpthread;;-lomniORB4;-lomnithread;-lomniDynamic4;-lRTC;-lcoil
[rtmbuild_init] - hrp_idldir             -> /usr/local/share/OpenHRP-3.1/idl
[rtmbuild_init] Generating bridge compornents from /home/yisha/workspace/jsk_ws/src/rtmros_common/openrtm_ros_bridge/idl
[rtmbuild_init] - openrtm_ros_bridge_idl_files : /home/yisha/workspace/jsk_ws/src/rtmros_common/openrtm_ros_bridge/idl/AutoTestService.idl;/home/yisha/workspace/jsk_ws/src/rtmros_common/openrtm_ros_bridge/idl/MyService.idl
CMake Error: Attempt to add a custom rule to output "/home/yisha/workspace/jsk_ws/src/rtmros_common/openrtm_ros_bridge/src_gen/MyServiceROSBridgeComp.cpp.rule" which already has a custom rule.
[rtmbuild_init] - openrtm_ros_bridge_autogen_msg_files  : AutoTest_MyService.msg;SimpleService_MyService.msg
[rtmbuild_init] - openrtm_ros_bridge_autogen_srv_files  : AutoTest_MyService_echo.srv;AutoTest_MyService_get_echo_history.srv;AutoTest_MyService_set_value.srv;AutoTest_MyService_get_value.srv;AutoTest_MyService_get_value_history.srv;SimpleService_MyService_echo.srv;SimpleService_MyService_get_echo_history.srv;SimpleService_MyService_set_value.srv;SimpleService_MyService_get_value.srv;SimpleService_MyService_get_value_history.srv
[rtmbuild_init] - openrtm_ros_bridge_autogen_interfaces : MyService;MyService
-- openrtm_ros_bridge: 2 messages, 10 services
[rtmbuild_genidl] add_custom_command for idl files in package openrtm_ros_bridge
[rtmbuild_genidl] - _output_cpp_dir : /home/yisha/workspace/jsk_ws/devel/.private/openrtm_ros_bridge/include/openrtm_ros_bridge
[rtmbuild_genidl] - _output_lib_dir : /home/yisha/workspace/jsk_ws/devel/.private/openrtm_ros_bridge/lib
[rtmbuild_genidl] - _output_python_dir : /home/yisha/workspace/jsk_ws/devel/.private/openrtm_ros_bridge/lib/python2.7/dist-packages/openrtm_ros_bridge
[rtmbuild_genidl] - _idl_file : /home/yisha/workspace/jsk_ws/src/rtmros_common/openrtm_ros_bridge/idl/AutoTestService.idl
[rtmbuild_genidl] - _idl_name : AutoTestService
[rtmbuild_genidl] - _idl_file : /home/yisha/workspace/jsk_ws/src/rtmros_common/openrtm_ros_bridge/idl/MyService.idl
[rtmbuild_genidl] - _idl_name : MyService
[rtmbuild_genbridge] generate OpenRTM-ROS bridges
[rtmbuild_genbridge] - openrtm_ros_bridge_autogen_interfaces : MyService;MyService
[rtmbuild_genbridge] - rtmbuild_add_executable : MyServiceROSBridgeComp
[rtmbuild_genbridge] - rtmbuild_add_executable : MyServiceROSBridgeComp
CMake Error at /home/yisha/workspace/jsk_ws/src/rtmros_common/rtmbuild/cmake/rtmbuild.cmake:286 (add_executable):
  add_executable cannot create target "MyServiceROSBridgeComp" because
  another target with the same name already exists.  The existing target is
  an executable created in source directory
  "/home/yisha/workspace/jsk_ws/src/rtmros_common/openrtm_ros_bridge".  See
  documentation for policy CMP0002 for more details.
Call Stack (most recent call first):
  /home/yisha/workspace/jsk_ws/src/rtmros_common/rtmbuild/cmake/rtmbuild.cmake:264 (rtmbuild_add_executable)
  CMakeLists.txt:63 (rtmbuild_genbridge)


CMake Error at /home/yisha/workspace/jsk_ws/src/rtmros_common/rtmbuild/cmake/rtmbuild.cmake:265 (add_custom_target):
  add_custom_target cannot create target
  "RTMBUILD_openrtm_ros_bridge_MyService_genbridge" because another target
  with the same name already exists.  The existing target is a custom target
  created in source directory
  "/home/yisha/workspace/jsk_ws/src/rtmros_common/openrtm_ros_bridge".  See
  documentation for policy CMP0002 for more details.
Call Stack (most recent call first):
  CMakeLists.txt:63 (rtmbuild_genbridge)


-- Configuring incomplete, errors occurred!
See also "/home/yisha/workspace/jsk_ws/build/openrtm_ros_bridge/CMakeFiles/CMakeOutput.log".
See also "/home/yisha/workspace/jsk_ws/build/openrtm_ros_bridge/CMakeFiles/CMakeError.log".