Add standard Android logging to aidl

This greatly helps understanding the code by enabling instrumenting
with debug logging statements.  To use:

ANDROID_LOG_TAGS=*:v aidl ....

Will cause the logging to log at the verbose level.  See base/logging.h
for more tricks.

Change-Id: I44ec26374419ca9d575f14b65c422444d17fcc66
Test: Ran the example command saw verbose logging.
3 files changed