Updated for the latest version of 'mruby'.
First try at compiling mruby using configure-generated Makefile.
Ruby version test corrected (because of sed posix re problems).
Updated for the latest version of 'mruby'.
Checking for required ruby gems.
Installation part of configure-and-make prepared (but not finished).
Merge pull request #2 from slivnik/master

Redesign of the compilation and installation process
update rvmrc to use any 1.9.3 patchlevel available, and add Gemfile for required gems
ignore some stuff that is generated during configure/make
some performance testing and comparison
instantiate all irep pool objects and syms in entry point
performance test stuff
fix bug with determining irep pool string length
remove old header file