Replace broken zeroc-ice34 DB5 patch using inline patch

Since https://raw.github.com/gist/1619052/5be2a4bed2d4f1cf41ce9b95141941a252adaaa2/Ice-3.4.2-db5.patch appears to be dead, the DB patch is moved as an inline patch.

To test this PR:
- Travis build should be green
- [OMERO-homebrew-develop](http://hudson.openmicroscopy.org.uk/job/OMERO-homebrew-develop/) and [OMERO-homebrew-stable](http://hudson.openmicroscopy.org.uk/job/OMERO-homebrew-stable/) should turn green again