Update Supersu 2.0

Change-Id: Iabb498fd0c5a06eeac5939a671e63192673c6291
MD5: handle no newline at end of nandroid.md5

If there is no newline at the end of nandroid.md5, then fgets will not
have '\n' as the last character for the last line. Make sure we aren't
replacing the last legitimate character of a string when reading the
file.

Change-Id: I3664582d7b13a2171bf074a236b44db104bb975a
ui_touch : optimized code readability.

Change-Id: I105d94f1fa920b66500fa6f085c5e3d3d4166d2d
recovery: SEARCH should work as SELECT_ITEM

Before 2cc22971e40a0ffc7849cdf09dc96916c22136e0, SEARCH worked as
SELECT_ITEM. After that, it became "back".

It is desirable for SEARCH to work as select because it provides
a full control for devices with the 4-capacitive-buttons row.

MENU = DOWN
HOME = UP
SEARCH = SELECT (was BACK)
BACK = BACK

Change-Id: Idc70366d76a18edecb25adce2e35e31e814443c5
Expose ui_has_initialized

Useful for command line processes so they can determine whether ui
functions are possible.

Change-Id: I2e1b8af39806973ae11eaed5bbdb1f3b6ddc7b13
MD5: Abort on errors for cmdline nandroid restore

If 'nandroid restore' is run from the command line, prompts are not
possible (thanks to Phyto Wardt for pointing this out). Abort with a
listing of files that are missing from directory or nandroid.md5.

Change-Id: I527ffeafc5da50e7878ddc103f4fb55218632ce1
Improve touch code

Currently retains swipe-only touch handling, but all elements are in
place to support taps in the future, if desired.

Change-Id: I276111f767ade32717c859c62d1d9f046ffa161c
Support capacitive touch keys

* Adds basic support for capacitive keys (virtual keys)
* Only enabled if BOARD_RECOVERY_SWIPE is enabled

Change-Id: I13ade22991880e4fb5c5c71639660e1563e95a89
Only show Mount USB storage if UMS possible

In the mounts and storage menu:
* Reduce the complexity of if/elses for /data/media and UMS specific
  menu entries with a simple struct
* Only show UMS mount option if vold managed volumes are available and
  usb-otg is not in use. Vold does not have any mechanism to determine
  if a managed volume is usb-otg, so we have to rely on string
  comparison to the volume label. "usbdisk" is by far the most common
  label, so this should cover most devices just fine.

Change-Id: I8a203a614e1c603c32a06b1afb77834cc4cd51ce
Version 6.0.5.0

Notable changes since 6.0.4.9:
* Segfault fixes for command line nandroid backup/restore
* Optimizations to progress thread so it doesn't get overloaded with
  screen updates (this significantly improves backup/restore speed)
* Fixes for command line nandroid backups of vold volumes
* Correctly update background image for errors and finished processes
* Allow selective restore of more than one partition at a time
* New MD5 calculator only verifies checksums of partition(s) selected
  for restore and warns you when files or checksums are not found
* New touch code supports a wider variety of devices for swipe control
  and virtual (capacative touch) keys are now supported
* Only show Mount USB storage option if possible

Change-Id: I813dce9d31ce2aa445a512026a210a558cab39e6