toolbox_recovery should always include setenforce

init does not follow symlinks and we need setenforce to be able
to set permissive. toolbox_recovery will now always include the
setenforce tool even if busybox has it so that our provided
init.rc can run /sbin/toolbox setenforce 0 successfully. The
symlink for setenforce will remain pointing to busybox if busybox
has setenforce.

Change-Id: I88a2a99bbed30cef3443ac5d94665e3850872237
Add TW_IGNORE_MT_POSITION_0 touch flag

This fixes touch on the a11 when fastboot booting the image. We
are also adding event logging for ABS_MT_POSITION data which we
should have been logging before but for some reason we did not.

Change-Id: I1b38c31c716efdcbe48db4faa5d0cef97c91c58e
Improve MTPServer logging of read errors

Unless MTP debug logging is enabled, you will miss the error and
will not know that something went wrong in the log.

Change-Id: I51f4758b415eb38e808ec8b1c9788b505bf88c65
Ingore SIGPIPE errors

If MTP exits unexpectedly, sending messages to add or remove a
storage device via Add_Remove_MTP_Storage was causing a crash.
Ignoring SIGPIPE allows us to more gracefully handle the error
instead of a total crash of TWRP.

Change-Id: I0a3f770f8b0f4bdbe10aa0ba857209b22b8668f7
Check for valid MTP_Storage_ID before adding or removing

Attempting to add a storage ID of 0 was causing a seg fault.

Change-Id: If8797186405be36ee70dbca63bd1063a62ba2812
gui: fix DEVICE_RESOLUTION warnings in Android.mk

Indenting the warnings with tab resulted in a make error
"*** commands commence before first target.  Stop."
instead of the intended message. Using spaces instead.

Also fixed the web link to point to the current build guide on XDA
instead of the outdated one on rootzwiki.

Change-Id: I8b25d39edae16dbc479c0e36bd11e12b49b4fbb0
Move sleep during MTP startup to MTP thread

Some devices are very slow to respond to the sysfs requests. To
prevent delaying the main GUI from booting during TWRP startup, we
move the sleep delay to just before we open the MTP device and
into the MTP thread so that it does not hold up the main TWRP
thread.

Change-Id: Ic931ef317d0fb7ef4dfdef46a32f68a014ff62c0
mtp: get rid of string streams, reduces binary size a bit

Change-Id: Iaa91eaac8269f02783c904d890641861ec747d11
twrp-functions: remove unused functions

Change-Id: I3d072be9ef28f21ade466bc4c42caca8848f7c2a