Switch from basic Makefile to autotools.
Switch from basic Makefile to autotools.

git-svn-id: 0da8f21dee8ca9acab225f08fca9f7eff6b6e134@44 4622ca98-d053-0410-b680-d1345939a8d7

abramhindle/MIT-Language-Modeling-Toolkit,orezpraw/MIT-Language-Modeling-Toolkit,mit-nlp/mitlm,abramhindle/MIT-Language-Modeling-Toolkit,mit-nlp/mitlm,mit-nlp/mitlm,orezpraw/MIT-Language-Modeling-Toolkit,orezpraw/MIT-Language-Modeling-Toolkit,abramhindle/MIT-Language-Modeling-Toolkit