android: Use sed instead of cpp to extract version number
android: Add copy of current AVCTP implemention

These files are not added to any makefile on purpose because they still
have external dependencies.
android/AVCTP: Strip dependencies

This strips AVCTP code of any dependency of core and btio to make it
transport agnostic.
android: Add initial skeleton for AVRCP in the daemon
android: Add initial skeleton for AVRCP in the HAL
android/haltest: Add init and cleanup calls to rc methods
android/AVRCP: Add implementation of SDP record

This adds the following record:

Service Name: AVRCP TG
Service RecHandle: 0x10002
Service Class ID List:
  "AV Remote Target" (0x110c)
Protocol Descriptor List:
  "L2CAP" (0x0100)
    PSM: 23
  "AVCTP" (0x0017)
    uint16: 0x103
Profile Descriptor List:
  "AV Remote" (0x110e)
    Version: 0x0100
android/AVCTP: Add avctp_set_destroy_cb

This adds avctp_set_destroy_cb that can be use to set a callback when
the AVCTP has been disconnected.
android/AVRCP: Add initial socket handling

This adds the initial socket listening and handling incoming connections.
android: Second attempt to extrac version number for OSX builds
android: Fix typo in configure.ac path
[travis-ci] Add configuration file
android: Fix GNU old-style struct field designator

This gives a warning on clang, that turns into an error due to -Werror.
android/tester: Fix crash on failure inside setup()

The various setup_* functions were still continuing even though setup()
failed and did not initialize data->if_bluetooth properly.

Also do a little refactoring by moving tester_setup_failed() calls to
the setup() callers, so they stay close to the other failure points and
not hidden deep into a helper function.

Crash detected by Valgrind:

==4959== Invalid read of size 4
==4959==    at 0x805967A: setup_base (android-tester.c:2029)
==4959==    by 0x8055541: setup_callback (tester.c:373)
==4959==    by 0x408348F: g_idle_dispatch (gmain.c:5250)
==4959==    by 0x4086A75: g_main_context_dispatch (gmain.c:3065)
==4959==    by 0x4086E14: g_main_context_iterate.isra.23 (gmain.c:3712)
==4959==    by 0x40872FA: g_main_loop_run (gmain.c:3906)
==4959==    by 0x41744D2: (below main) (libc-start.c:226)
==4959==  Address 0x4 is not stack'd, malloc'd or (recently) free'd
android: Remove useless extra parenthesis
android: Trivial replacement of tabs where spaces are expected
emulator: Fix crash if socket(AF_ALG) is not support by the kernel

On this situation, smp_stop() was being called with NULL pointer.

Crash detected by valgrind:

==7925== Invalid read of size 4
==7925==    at 0x8052F18: smp_stop (smp.c:480)
==7925==    by 0x8052542: bthost_stop (bthost.c:2073)
==7925==    by 0x805521D: hciemu_unref (hciemu.c:372)
==7925==    by 0x8058C65: test_post_teardown (android-tester.c:464)
==7925==    by 0x8055DE7: tester_teardown_complete (tester.c:533)
==7925==    by 0x8055501: teardown_callback (tester.c:312)
==7925==    by 0x408348F: g_idle_dispatch (gmain.c:5250)
==7925==    by 0x4086A75: g_main_context_dispatch (gmain.c:3065)
==7925==    by 0x4086E14: g_main_context_iterate.isra.23 (gmain.c:3712)
==7925==    by 0x40872FA: g_main_loop_run (gmain.c:3906)
==7925==    by 0x41744D2: (below main) (libc-start.c:226)
==7925==  Address 0x8 is not stack'd, malloc'd or (recently) free'd
unit/test-ringbuf: Fix indentation
shared: Fix undefined behavior when calculating next power of two

According to GCC documentation, __builtin_clz() is undefined if argument
is zero. The following problem was detected when compiling with -O0:

ERROR:unit/test-ringbuf.c:70:test_power2: assertion failed: (size1 ==
size2)

Also refactor align_power2() so the internal "find last set bit"
operation is in its own fls() function (similar to how kernel does).
fls() checks if argument is zero before calling __builtin_clz().