ports/178023: [patch] graphics/cairo: add a fix for text redrawing in firefox

[Jan Beich]

>Number:         178023
>Category:       ports
>Synopsis:       [patch] graphics/cairo: add a fix for text redrawing in firefox
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-ports-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          change-request
>Submitter-Id:   current-users
>Arrival-Date:   Sun Apr 21 10:00:00 UTC 2013
>Closed-Date:
>Last-Modified:
>Originator:     Jan Beich
>Release:        FreeBSD 10.0-CURRENT amd64
>Organization:
>Environment:
>Description:
https://bugzilla.mozilla.org/show_bug.cgi?id=709477
>How-To-Repeat:
1. install www/firefox
2. visit http://cgit.freedesktop.org/cairo/
3. click any link e.g., on the last commit message
4. hit a few times Back and Forward buttons in firefox 
5. notice text boldness increases each time
>Fix:
$ fetch https://hg.mozilla.org/mozilla-central/raw-file/tip/gfx/cairo/xlib-glyph-clip-region.patch
$ sed -i '' 's|[ab]/gfx/cairo/cairo/||' xlib-glyph-clip-region.patch
$ mv xlib-glyph-clip-region.patch files/patch-src_cairo-xlib-surface.c
$ svn add files/patch-src_cairo-xlib-surface.c
$ svn ci # copy-paste pr number and synopsis

mozilla-central/gfx/cairo/README states the bug was fixed in cairo-1.11.3:

  http://cgit.freedesktop.org/cairo/commit/?id=be1ff2f
  http://cgit.freedesktop.org/cairo/commit/?id=b132fae

but reading mozilla's bug 856419 it may actually have reoccured.
>Release-Note:
>Audit-Trail:
>Unformatted: