[svn] Another C# lexer fix.
[svn] Another C# lexer fix.

erickt/pygments,erickt/pygments,spencerlyon2/pygments,spencerlyon2/pygments,spencerlyon2/pygments,erickt/pygments,spencerlyon2/pygments,tomstuart/pygments,tomstuart/pygments,tomstuart/pygments,spencerlyon2/pygments,tomstuart/pygments,spencerlyon2/pygments,spencerlyon2/pygments,tomstuart/pygments,spencerlyon2/pygments,erickt/pygments,tomstuart/pygments,tomstuart/pygments,erickt/pygments,spencerlyon2/pygments,erickt/pygments,tomstuart/pygments,spencerlyon2/pygments,spencerlyon2/pygments,tomstuart/pygments,tomstuart/pygments,tomstuart/pygments,tomstuart/pygments,spencerlyon2/pygments,erickt/pygments,erickt/pygments,spencerlyon2/pygments,spencerlyon2/pygments,erickt/pygments,tomstuart/pygments,tomstuart/pygments,spencerlyon2/pygments,erickt/pygments,erickt/pygments,spencerlyon2/pygments,spencerlyon2/pygments,spencerlyon2/pygments,erickt/pygments,tomstuart/pygments