Only install module files, not config dir with IDE

 - MSVS will install, e.g., `$<prefix>/include/Debug/json_file_module.mod` - We should strip the build config directory that IDEs like MSVS add when doing an installation

Author: zbeekman

CMakeLists.txt

@@ -386,7 +386,10 @@ install ( TARGETS ${LIB_NAME} ${LIB_NAME}-static
 # Code to fix the dylib install name on Mac.
 include ( cmake/fixupInstallNameDir.cmake )
 
-install ( DIRECTORY "${MODULE_DIR}/" DESTINATION "${INSTALL_MOD_DIR}" )
+install ( DIRECTORY "${MODULE_DIR}/" DESTINATION "${INSTALL_MOD_DIR}"
+ FILES_MATCHING
+ PATTERN "*.*"
+ PATTERN "*/" EXCLUDE) # Don't get $<CONFIG> subdirectory when building with MSVS
 
 #------------------------------------------
 # Add portable unistall command to makefile