OOT of modtool make error for fpga testbench while using build folder with name other than build(like build-host or build-arm)

[Arshamza]

Hi every one
there is a bug in CMakeLists.txt of OOT created of modtool latest version.
if you use "build" as the name of your "build folder" it will pass in "make rfnoc_block_custom_tb" but other than build, it will face error:

/bin/sh: ../../../../build/cmake/Modules/run_testbench.sh: No such file or directory
beacuse it search a non existing folder rather than "your-build-folder-name"
/gr-ettus/python/rfnoc_modtool/rfnoc-newmod/CMakeLists.txt
or /your-new-mod-oot(like rfnoc-custom)/CMakeLists.txt
line 194:        add_custom_target(${_target_name}
            COMMAND ${CMAKE_SOURCE_DIR}/build/cmake/Modules/run_testbench.sh ${UHD_FPGA_DIR} e310 ${CMAKE_CURRENT_SOURCE_DIR} xsim
it should be :
        add_custom_target(${_target_name}
            COMMAND ${CMAKE_SOURCE_DIR}/"your-build-folder-name"/cmake/Modules/run_testbench.sh ${UHD_FPGA_DIR} e310 ${CMAKE_CURRENT_SOURCE_DIR} xsim
or 
        add_custom_target(${_target_name}
            COMMAND ${CMAKE_BINARY_DIR}/cmake/Modules/run_testbench.sh ${UHD_FPGA_DIR} e310 ${CMAKE_CURRENT_SOURCE_DIR} xsim
thanks.