Buildsystem: Move uninstall-target for UNIX and OSX platforms

--HG--
branch : trunk
rename : cmake/platform/unix/cmake_uninstall.in.cmake => cmake/platform/cmake_uninstall.in.cmake

cmake/platform/osx/settings.cmake

@@ -16,7 +16,7 @@ endif()
 
 # configure uninstaller
 configure_file(
-  "${CMAKE_CURRENT_SOURCE_DIR}/cmake_uninstall.cmake.in"
+  "${CMAKE_SOURCE_DIR}/cmake/platform/cmake_uninstall.cmake.in"
   "${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake"
   IMMEDIATE @ONLY
 )

cmake/platform/unix/settings.cmake

@@ -12,7 +12,7 @@ endif()
 
 # configure uninstaller
 configure_file(
-  "${CMAKE_SOURCE_DIR}/cmake/platform/unix/cmake_uninstall.in.cmake"
+  "${CMAKE_SOURCE_DIR}/cmake/platform/cmake_uninstall.in.cmake"
   "${CMAKE_BINARY_DIR}/cmake_uninstall.cmake"
   @ONLY
 )