liblog: Replace log/log.h with android/log.h

Move all liblog related content into android/log.h, and make
log/log.h points to android/log.h.

Test: Compile
Bug: 26552300
Bug: 31289077
Change-Id: I858e0ebe047b86f2a8530a99bc9c380d3d58edbb
16 files changed
tree: 2fb913754bf75f60086be4ddf3af517e82b8e17a
  1. liblog/
  2. logcat/
  3. logd/
  4. logwrapper/