AM/PM Styles in Status Bar

Adds configurable AM/PM styles back into the status bar.
Includes Eclair's "Normal" style, Froyo's "Small" text, and Gingerbread's "None".
CMParts Portion: http://review.cyanogenmod.com/#change,4298

Relevant link: http://en.wikipedia.org/wiki/Midnight_sun

Change-Id: Ia365b5fedbc67d84e3aaed4d6ae280336d4f5bb6