Fix patch number to 0 for release. Re #8904.

Author: RussellTaylor

Code/Mantid/Build/CMake/VersionNumber.cmake

@@ -6,5 +6,5 @@ set ( VERSION_MINOR 1 )
 # UNCOMMENT the next 'set' line to 'force' the patch version number to
 # a value (instead of using the count coming out of 'git describe')
 # DO NOT COMMIT THIS TO MASTER UNCOMMENTED, ONLY TO A RELEASE BRANCH
-#set ( VERSION_PATCH 0 )
+set ( VERSION_PATCH 0 )