Correct the error message about missing gsm library
Remove all automake or autoconf generated scripts from version control

Use ./autogen.sh to generate them all while compiling
Update README.md
Fixed segmentation fault.

This fix removes segmentation fault that was introduced because modifying
the source code without understanding it properly.
Fix memory leaks found by clang static analyser
Merge branch 'master' of github.com:dhvani-tts/dhvani-tts