Fix render issue when button has conditional

If the button has a conditional, the image render function will
return a 0 which indicated that an image was present even if it
was not if the condition was not being met during boot. When the
condition is met, mButtonImg was not set to NULL causing a render
request failure.

Change-Id: I32be0ddcdc1bf7ad22440d66018ef09484280afa
add fix /data/data contexts to fixPermissions
only compile symbols if selinux is defined
Change-Id: I7c8596360cdf2f715c8e1379fc55ea27d9370393
Add support for persistent variables in theme's <variables> section

* Add support for variables with persist="1", which will cause
  them saved into settings file and reloaded on next boot.
* This is handy for theme makers, who can use this to
  implement "theme settings".

Signed-off-by: Vojtech Bocek <vbocek@gmail.com>

Change-Id: I6415979011b38cbb15dec9909c445b02da6eadc0
Support custom graphics.c.

TWRP does not use this, but is needed for other things that depend
on it like charger.

Change-Id: Ic7d10e8230151bcc4be6cfa222a1e07231e7139f
add support for fsflags= option in twrp.fstab file

example userdata line (as needed by MotoX):
/data         f2fs      /dev/block/platform/msm_sdcc.1/by-name/userdata       flags=fsflags="inline_xattr"

Code for parsing flags/options originally based on AOSP fs_mgr sources.

Change-Id: I5fb2b5d5cdd08137e6bf71f0085a3f8aebd889a8
crypto: Fix crypto dependencies for ICS/Samsung methods

- libmincrypt renamed to libmincrypttwrp that is an static library
- libjpegtwrp does not exist
- libfs_mgrtwrp is for JB decryption methods

This fixes making full builds when TW_INCLUDE_CRYPTO_SAMSUNG := true and TW_INCLUDE_CRYPTO := true are set.
Somehow typing make recoveryimage doesnt push the mentioned issue.

Change-Id: I7cad5db4f51152a1a8209e619b188ca88d7c74d1
Merge "add fix /data/data contexts to fixPermissions only compile symbols if selinux is defined Change-Id: I7c8596360cdf2f715c8e1379fc55ea27d9370393" into android-4.4
Merge "Add support for persistent variables in theme's <variables> section" into android-4.4
Create a TWRP Disk Usage Class to retain state about a directory and whether we should skip it in other classes like twrpTar.
Moved Get_Folder_Size to this new class.

Change-Id: If0a0220f900eb109581f2eeaf7b76e3f7d6886f1
Improve SELinux support check

If the kernel does not use SELinux security then the ramdisk
contents will not have contexts set on the files, however we may
still have everything we need in recovery if the kernel supports
EXT4 security labels, so we try to check /cache/recovery if it
exists first.

Change-Id: I96a4ae16418e07b0a2e83cd56e19893898d0b394
declare dir for non data/media devices

Change-Id: I60e2e2a880c3bd5fff3f485f7c8e4ac9ab6fd3bd
Merge pull request #2 from omnirom/android-4.4

merge