libion: Support for old ION API

 * Kernel 3.0 doesn't have heap_mask or SYNC ioctl, so add a board flag
   so that proprietary code that uses the old kernel API directly still
   works.

Change-Id: I4227c79a5de46c60eeebd2e16ca88dd6d580916a
rootdir: Add mediaserver to qcom_diag group

 * QCOM audio drivers need this.

Change-Id: I3cba0356e2995951208fee5e180e56b1afbc7158
liblog: add required function

Some Motorola proprietaries require a function named __android_log_loggable. This
change adds the function and solves problems with radio and other
binaries on qualcomm based Motorola phones. This code is activated with
TARGET_USES_MOTOROLA_LOG:=true

Change-Id: I722b42d34198c027f265c3cf9f220d9798814915

Conflicts:
	liblog/logd_write.c