Passes all configure flags starting with VCS to autorevision.cmake.

Patch by bdunahu <bdunahu@operationnull.com>.

diff --git a/build_tools/CMakeLists.txt b/build_tools/CMakeLists.txt
index ea714977a..07d5742bd 100644
--- a/build_tools/CMakeLists.txt
+++ b/build_tools/CMakeLists.txt
@@ -10,6 +10,17 @@ add_custom_target(autorevision ALL
 )
 set_property(TARGET autorevision PROPERTY FOLDER "_WZBuildProcessTargets")
 
+get_cmake_property(_cache_vars CACHE_VARIABLES)
+
+set(_autorevision_vcs_args "")
+foreach(_var IN LISTS _cache_vars)
+    # just collect the VCS ones
+    if(_var MATCHES "^VCS_")
+        list(APPEND _autorevision_vcs_args "-D${_var}=${${_var}}")
+        message( STATUS "Collected ${_var}=${${_var}}" )
+    endif()
+endforeach()
+
 # Autorevision command that will run *every* build
 set(_autorevision_cache_tarball_src_input "${CMAKE_CURRENT_SOURCE_DIR}/autorevision.cache")
 set(_autorevision_cache_file "${CMAKE_CURRENT_BINARY_DIR}/autorevision.cache")
@@ -24,7 +35,7 @@ add_custom_command(
 	COMMAND ${CMAKE_COMMAND} -DINPUT_FILE=${_autorevision_cache_tarball_src_input} -DOUTPUT_FILE=${_autorevision_cache_file} -DSKIP_IF_INPUT_MISSING=ON -DSKIP_IF_OUTPUT_EXISTS=ON -P ${CMAKE_SOURCE_DIR}/cmake/CopyFileHelper.cmake
 	# Autorevision.cmake
 	# this command must generate: ${CMAKE_CURRENT_BINARY_DIR}/autorevision.h
-	COMMAND ${CMAKE_COMMAND} -DCACHEFILE=${_autorevision_cache_file} -DOUTPUT_TYPE=h -DOUTPUT_FILE=${_autorevision_h_file} -P ${CMAKE_SOURCE_DIR}/build_tools/autorevision.cmake
+	COMMAND ${CMAKE_COMMAND} -DCACHEFILE=${_autorevision_cache_file} -DOUTPUT_TYPE=h ${_autorevision_vcs_args} -DOUTPUT_FILE=${_autorevision_h_file} -P ${CMAKE_SOURCE_DIR}/build_tools/autorevision.cmake
 	WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}"
 	VERBATIM
 )