Update JRuby 1.7.x

[abscondment]

• Remove -dev build, since it no longer exists on ci.jruby.org
• Add 1.7.0.preview1

[jeremy]

Could you use a hyphen to match the ruby-build convention? jruby-1.7.0-preview1

Shame that the -dev tarball is gone. That forces people using it to upgrade. Better to point the definition at a new, working URL than remove it entirely.

[abscondment]

I tried to use that name initially, but the tarball itself is listed as 1.7.0.preview1. Changing the package name breaks the installation since the tarball contains a directory with the old, alternate name.

I also looked for a new dev URL, but couldn't figure out a good replacement.

What do you suggest regarding the naming convention? I don't have any input into the JRuby releases, and it seems the scripts aren't set up to allow the package_name to differ from the tarball's contents.

[abscondment]

Actually, I take it back -- it looks like changing the file name but not the package name produces the desired result.

[jeremy]

Check out the -dev package. You can use a hyphen in the package name -- for both the filename and for install_package -- independently of the tarball's filename.

[abscondment]

So, does anything need to change after 7f574db? If I hyphenate the package name in the install_package call, it produces the cd issue I referred to.

[sstephenson]

Looks good - thanks for the patch!