Remove quotes from patch command.

When the gpatch fix for solaris was introduced in 67a0a3852024 the
patch command was "". For some strange reason windows 2000 is
not happy with those quotes when given in os.popen.

mercurial/util.py

@@ -94,7 +94,7 b' def patch(strip, patchname, ui):'
     """apply the patch <patchname> to the working directory.
     a list of patched files is returned"""
     patcher = find_in_path('gpatch', os.environ.get('PATH', ''), 'patch')
-    fp = os.popen('"%s" -p%d < "%s"' % (patcher, strip, patchname))
+    fp = os.popen('%s -p%d < "%s"' % (patcher, strip, patchname))
     files = {}
     for line in fp:
         line = line.rstrip()