Replace NOT_VALID_WORD with NOT_A_VALID_WORD_POS

Bug: 6669677
Change-Id: If5fb58e8a98b04b767eaaf624cb6a40841b64f54
9 files changed
tree: 98e3986a5d06caefe73adaf5f733fa9e61eecefa
  1. dictionaries/
  2. java/
  3. native/
  4. tests/
  5. tools/
  6. Android.mk
  7. CleanSpec.mk