mixture model training added; EM for mixture model added
memory errors fixed
rename GPC
minor changes in mixture models
Merge pull request #2448 from mazumdarparijat/em

mixture model training added; EM for mixture model added
Merge pull request #2477 from yorkerlin/develop

rename the GPC modular
old opencvs version error handled
Merge pull request #2486 from kislayabhi/anpr

old opencv version error handled