debian package support for rbx 1.3/ruby 1.8.7.

These files were prepared with a simple
mechanical transform from the rbx 2.2 debian
package files.

These build files expect patches on top of
release 1.3.0 that were not included. The
patches were submitted to be part of release 1.3.1
Merge pull request #3000 from slaught/rbx1.3-debian-pkg

debian package support for rbx 1.3