* <Keyboard> XML file should be kbd_*.xml
* <Row> XML file should be rows_*.xml or row_*.xml
* <Key> XML file should be key_*.xml or keys_*.xml
* <key-style> XML file should be key_styles_*.xml
Change-Id: Ie57d5d78389c13d6c066ace4e3588518d1f25f13
The first key and the last of the row are automatically marked as left
and right edge key respectively. The existence of Spacer will prevent
those automatic marking.
Bug: 5038844
Change-Id: Ie34169ceaf76e24923b8d8125eda6ecb95cf1fee