change GET_SOURCE_FILES() in Functions.cmake to include *.tpp and store...

change GET_SOURCE_FILES() in Functions.cmake to  include *.tpp and store relative file path instead of absolute one

Using relative path makes easier to modify a list of source files later, e.g. removing particular source files depending on configuration.

scripts/cmake/Functions.cmake

@@ -15,8 +15,9 @@ MACRO(GET_SOURCE_FILES SOURCE_FILES)
 	ENDIF()
 
 	# Get all files in the directory
-	FILE(GLOB GET_SOURCE_FILES_HEADERS ${DIR}/*.h)
-	FILE(GLOB GET_SOURCE_FILES_SOURCES ${DIR}/*.cpp)
+	FILE(GLOB GET_SOURCE_FILES_HEADERS RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} ${DIR}/*.h)
+    FILE(GLOB GET_SOURCE_FILES_SOURCES RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} ${DIR}/*.tpp)
+	FILE(GLOB GET_SOURCE_FILES_SOURCES RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} ${DIR}/*.cpp)
 
 	SET(${SOURCE_FILES} ${GET_SOURCE_FILES_HEADERS} ${GET_SOURCE_FILES_SOURCES})