Catch up with API changes on mrb_intern() -> mrb_intern_cstr()
Removed extra space ahead of function calls that was wrongly introduced in last commit
Merge branch 'master' of https://github.com/mattn/mruby-pcre-regexp

Conflicts:
	src/mruby_pcre_regexp.c
Corrected test for multiline matches, according to the real expected behaviour of PCRE library.

In particular, the PCRE_MULTILINE option bit only affects strings that contain ether ^ or $.
Much closer behaviour to MRI when multiline option is enabled.

"abc\nefc".match(/.c$/)[0] => "fc"
"abc\nefc".match(/.c$/m)[0] => "bc"
"abc\nefc".match(/.*/)[0] => "abc"
"abc\nefc".match(/.*/m)[0] => "abc\nefc"
Merge pull request #3 from pbosetti/master

Catch up with API changes on mrb_intern() -> mrb_intern_cstr()