LG dictionary reading module
included LGDictModule & new atom types into build
make viterbi code up to date and uses LGDictModule
diff cleanups
removed un-needed file
Merge 'LGDict' of github.com:williampma/opencog

Conflicts:
	opencog/nlp/CMakeLists.txt
Merge pull request #1156 from linas/lrg

Merge William' #1154 pull request