[Patch] Fattened braces

[Bertrand Bordage]

Hi,

I recently noticed that small braces are too thin to be read.

This patch gently increases the thickness of the 256 first braces :

http://codereview.appspot.com/4518052/

It prepares a future patch that will implement in-staves braces especially used in organ music.

Several examples in these scores :

http://imslp.org/wiki/12_Pi%C3%A8ces_pour_Orgue_(Gigout,_Eug%C3%A8ne)

Best regards,

Bertrand