scintilla: cocoa: make font quality settings also apply to the margin
http://bugs.activestate.com/show_bug.cgi?id=100724

Extracted from upstream commit 18272d4bb51d
(ignoring ScintillaHistory.html)

(integrated from komodo (trunk) change 82992 by marky)

git-svn-id: http://svn.openkomodo.com/repos/openkomodo/trunk@13959 b87d16e7-d29f-4ee1-b5ec-817d645d335f