r22715 - gnucash/trunk/packaging/win32 - Win32 build: some more patchfile cleanups

[Geert Janssens]

Author: gjanssens
Date: 2013-01-19 13:28:00 -0500 (Sat, 19 Jan 2013)
New Revision: 22715
Trac: http://svn.gnucash.org/trac/changeset/22715

Modified:
   gnucash/trunk/packaging/win32/install-impl.sh
Log:
Win32 build: some more patchfile cleanups

Wrap patching code in conditional in most cases to only run patch if
there actually is a patch file available.