Add mruby 1.0.0.
Merge pull request #510 from Red54/master

Add mruby 1.0.0.
Improve Java 7 detection

Java on most (all?) platforms directs `-version` output to STDERR.
Merge pull request #511 from cmattson/java7-detection

Fix Java 7 detection
added definition of Ruby 1.9.3-p545
remove build of libyaml, because bundled libyaml is already updated
Merge branch 'remove-libyaml-build'
Merge branch 'release-193p545'
added definition of Ruby 2.1.1
ruby-build 20140224
added definition of Ruby 2.0.0-p451
Merge branch 'release-200p451'
Merge branch 'release-211'
ruby-build 20140224.1
Added a JRuby 1.7.11 recipe.
Merge pull request #515 from nirvdrum/jruby-1.7.11

Added a JRuby 1.7.11 recipe.
Add support for JRuby 9000 bundled with the Graal VM

JRuby 9000 (the next major release) includes a backend that supports a
new JVM JIT compiler called Graal. Graal is based on OpenJDK but hasn't
been released yet.

http://openjdk.java.net/projects/graal/
Add test for JRuby+Graal
Merge branch 'graal'

Closes #514
ruby-build 20140225