[PATCH]: New G clef

[Carl Sorensen]

Marc Hohl has worked on a new G clef that is rotated about 1.5 degrees
clockwise to improve its balance, as suggested by Jan

(see 
<http://thread.gmane.org/gmane.comp.gnu.lilypond.devel/24935/focus=24947>)

A 1200-dpi png is available at

http://www.hohlart.de/marc/gcleftest.png

A patch is available on rietveld at

http://codereview.appspot.com/183103

Please review and comment.

Thanks,

Carl