Make digraph lookups case insensitive

Example: Be able to gesture dictionary words that start with an upper-case
German umlaut (e.g., Übermensch).

Bug: 8493920
Change-Id: I3253bcd236d34c0af60116e5b41e359f2715bf97
1 file changed
tree: 3ff8847f7169f9df96e993b6b937ad526ccef2c0
  1. dictionaries/
  2. java/
  3. native/
  4. tests/
  5. tools/
  6. Android.mk
  7. CleanSpec.mk