Support keyboardHeight and maxKeyboardHeight to Keyboard XML

This change introduces,
- new attribute keyboardHeight to specify default keyboard height.
- new attribute maxKeyboardHeight to specify maximum keyboard height,
  usually specified by percentage to the screen height.
- keyHeight attribute is obsoleted
- new attribute rowHeight to specify a row height, can be specifed as
  percentage of the keyboard height. And verticalGap is included to
  the row height (row height = key height + vertical gap).

Change-Id: I48a2f2661e8a91a998503a847437c1baf1de9b9c
54 files changed
tree: d362ebc3f06430ed22adad666765daf5267a3ce8
  1. dictionaries/
  2. java/
  3. native/
  4. tests/
  5. Android.mk
  6. CleanSpec.mk