-Fixes issue 3573 (http://code.google.com/p/cyanogenmod/issues/detail?id=3573) with RTL

characters wrapping down to the next line when there's enough space on the line itself.

-Fixes issue with RTL characters overflowing outside the allowable margin for some layouts

-Optimizes measurement of layouts and text by only processing Bidi if there are any Arabic characters available
as opposed to processing Bidi if there are any RTL character available. (This is because Arabic is the only RTL
language where the width of characters changes due to reshaping. Other RTL languages do not require reshaping
and hence do not require this extra processing.)

***Special thanks to Eran Mizrahi***

Change-Id: I8ca00c564c2fede51e246222eeb0e3122b0b6fec