(trunk/egs/gale_arabic) Various fixes and improvements of the recipe. Added possibility to add more corpora easily, GALE 2014 for example.

git-svn-id: https://svn.code.sf.net/p/kaldi/code/trunk@4545 5e6a8d80-dfce-4ca6-a32a-6e07a63d50c8
trunk: fix some lexicon generating issue

git-svn-id: https://svn.code.sf.net/p/kaldi/code/trunk@4546 5e6a8d80-dfce-4ca6-a32a-6e07a63d50c8