This change introduces makelabel tool that reads all languages'
donottranslate-more-keys and generate KeyboardLabelsSet.java source
file. The makelabel command must be invoked prior to compile LatinIME.
Change-Id: I7515c7919c535e30f9c80a37bdc831d0f682cd43
This change also uses Key.code instead of Key.outputText for the
variety of parentheses keys taht introduced by I85998f17.
Bug: 5975484
Change-Id: I86879c9942d264edc71e5893325a2f582763d12f