LatinIME: Customize features for regional package.

- Customize auto correction type of input method LatinIME.
- Make the button in the lower right corner of the keyboard to be Enter
  button in MMS.

Change-Id: I6eccf7b78258765b52ffa28c9e43fa771e6e0799
LatinIME: Reginal requirement for RTL

Convert left/right layout properties to start/end properties.

Change-Id: Ib7121d4aeb550bf2c88af764733a6a2b2c114782
latinime: Add "more" keys to ALL the keys

 * I'm in ur productivity, increasin' it.

Change-Id: I688bed9c3db7ef8d2c9dd5e4af72a65eb7f37966
LatinIME: Add fallback loader for JNI lib

Prefer the JNI lib with gesture typing support.
If not available / installed fall back to the standard one without
geture typing.

Change-Id: I70a5f43386a9c72809a70bd286f3702378d6f9be
LatinIME: Only enable gesture mode if gesture lib is available

 * Prevents keyboard FC when gapps is not loaded.

Change-Id: I0d48e1cd80534513205f61913c798b48573ea38c
LatinIME: Add "more" keys to ALL the keys in Greek layouts

Change-Id: I120e7b94abd71baf24c97afbd20cf2c6c76df6ef
LatinIME: Apply "Enable more keys for top row on tablets" (f6620308ba)
and "Add "more" keys to ALL the keys" (c561f31af9) to slavik layouts.

Change-Id: Ic6fea3faecc5783d99f5257a4501e37b79f40fdf
Update JNI fallback lib name

Change-Id: I18db2d4cc87ffafc5a439a193f4d8f894136f5eb