cmake: Prefix all test target by pycppad-

Author: jorisv

example/CMakeLists.txt

@@ -1,4 +1,4 @@
-ADD_PYTHON_UNIT_TEST("add_eq" "example/add_eq.py" "python")
+ADD_PYTHON_UNIT_TEST("${PROJECT_NAME}-add_eq" "example/add_eq.py" "python")
 IF(BUILD_WITH_CPPAD_CODEGEN_BINDINGS)
-  ADD_PYTHON_UNIT_TEST("cppadcg_c_codegen" "example/cppadcg_c_codegen.py" "python")
-ENDIF(BUILD_WITH_CPPAD_CODEGEN_BINDINGS)
+  ADD_PYTHON_UNIT_TEST("${PROJECT_NAME}-cppadcg_c_codegen" "example/cppadcg_c_codegen.py" "python")
+ENDIF()