Add support for TrueType fonts

* Keeps original font system in place
* Uses the same API as original font system:
   - You can render only one line at a time
   - You can only use one font and color for one gr_text* call
* Caches all rendered text, with a string cache limited to 400
  entries, then it trucates to 250, which results in memory
  usage hovering around 5-10MB

Change-Id: I36107b9dcd8d57bae4486fce8b8f64e49ef3d906
Signed-off-by: Vojtech Bocek <vbocek@gmail.com>
display cpu temperature in twrp
use TW_NO_CPU_TEMP := true to disable display
use TW_CPU_CUSTOM_PATH := path to set custom path

Change-Id: Id260ecbb4ec36a78442387329944f67003d0f6a0
Update reference to 24-hour clock

Change-Id: Ic864fae4fda9707fc84d6d8b33587863b7664e1e
mtp: fix log spam: findNode not finding a node is not an error

The requested file might be on another storage.

Change-Id: Ia71525058b616a28a8ea2b4ab48ebac1c790757e
Fix wiping crash when block device is not present

Especially with /sd-ext, trying to wipe when the device is not
present causes a seg fault in the make_ext4fs function. Check to
make sure that the block device is present before trying to wipe.

Change-Id: I91973b5b832c9edbce81d61a271e84363c19e6c5
Merge remote-tracking branch 'twrp/android-4.4'