Enable Material theme for Android

With this CL, Mozc for Android supports Material theme.

Note that this CL also contains a lot of other improvements and bug fixes that might not be directly related to the Material theme.  Here are some examples:
  * Floating candidate window support in Android 5.0.
  * Improved accessibility support.
  * Start bundling Key Character Map (KCM) file of Japanese 109 keyboard.

See the release note for details.

As for desktop versions, no behavior change is intended.

TEST=manually done with Nexus 5 / Android 5.0.1 (LRX22C)

git-svn-id: https://mozc.googlecode.com/svn/trunk@467 a6090854-d499-a067-5803-1114d4e51264
848 files changed
tree: cd2911f66391dbae90deff9e4a26c6c4f84ffb25
  1. src/