make erlware_commons work on pre-R15 releases

Signed-off-by: Jordan Wilberding <diginux@gmail.com>
support printing erl_syntax meta calls in the same way as erl source

Signed-off-by: Jordan Wilberding <diginux@gmail.com>
support parsing a version with a leading 'v'

This *should* make version parsing much, much simpler.