CM11 Themes: Use 32bit hash to decide if idmap should be created

Using the last modified time of the package to determine if an idmap
should be created is not always valid for system packages.  We have
observed some packages having a time stamp of 08/01/2008 even if the
package has changed.  This causes system packages, such as
frameworks-res.apk to not be properly mapped if IDs changed in this
package.

This patch will generate a 32 bit hash code based on the file's
MD5 sum.  This hash code is then provided to idmap for writing these
values into the idmap header for future comparison.

This patch requires the following change found in frameworks/native
http://review.cyanogenmod.org/62566

Change-Id: Ie9e0273aef96217f06b08774623dd5f1b290a3da
Cleanup theme assets when done with them

Before this patch if phone was left on long enough it would reboot
when a theme was applied due to files being left open.

Change-Id: I4c242249fcf6e8097789c3dd6690104296485784
fonts: Add LBhashitaComplexSans font for Sinhala

* From http://www.siyabas.lk/files/Bhashitha_Linux.zip

Change-Id: I293bfe84efd663d5a105541196e2bb3b123ee192
Merge "fonts: Add LBhashitaComplexSans font for Sinhala" into kitkat
Merge remote branch 'aokp/kitkat' into kitkat