ruby-build 20131226
Add JRuby 1.7.10
ruby-build 20140110
Remove trailing whitespace from JRuby 1.7.10 definition

Believe it or not, this was causing the following error:

    command not found-build: line 370: build_package_jruby
ruby-build 20140110.1
Run sed without the -E flag.
GNU sed version 4.1.5 on CentOS 5.8 does not support the -E flag:
$ sed -E
sed: invalid option -- E
Merge pull request #491 from marc/master

GNU sed compatibility
Add MAKE_INSTALL_OPTS for packages

Allows for passing environment variables specifically to the "make install"
step of package building.

This can be helpful for providing a different DESTDIR= to a ruby install from
the --prefix that is used
Add tests for RUBY_MAKE_INSTALL_OPTS=
Add mention of RUBY_MAKE_INSTALL_OPTS in README
Add MAKE_INSTALL_OPTS configuration option
Add test for MAKE_INSTALL_OPTS

Also fix the ordering of make install arguments
Fix install file mode for files in share/

install(1) defaults to file mode 0755 which is inappropriate for Ruby
definitions
Test that files in `share/` get installed w/ mode 644
Merge branch 'install-mode'

Closes #483
Merge pull request #493 from eric/add-make-install-opts-variables

Add MAKE_INSTALL_OPTS for packages
Add Rubinius 2.2.4
Update libyaml to version 0.1.5

Closes https://github.com/sstephenson/ruby-build/issues/499.
ruby-build 20140204
Add warning about CVE-2013-6393 to CHANGELOG [ci skip]

Actually resolves https://github.com/sstephenson/ruby-build/issues/499.