Add TravisCI support to 0.8.2

While trying to get a build of 0.8.2 working on Fedora 17 I went ahead and added integration with Travis CI. This pull request does the following:

 * Permits non-root install of jzmq deps
 * Find Java directory on Linux.
 * Patches jzmq Makefile to support newer autotools.
 * Add Travis CI integration with .travis.yml.