pg_upgrade del/rmdir path fix - Mailing list pgsql-hackers

Here is a patch against 9.2 sources (it applies with offsets to HEAD 
too) to fix the problem that pg_upgrade can write paths in arguments for 
Windows builtin commands (specifically DEL and RMDIR) with the wrong 
path separator style. This should be applied all the way back to 9.0.

cheers

andrew