Initial whack at a Maven build for Vert.x

The testsuite does not pass; there are some classpath issues related to resources that need to be fixed.

Final packaging has not been tackled yet.  Still need to implement doc generation for everything but Groovy and Java.
Use pluginManagement to normalize plugin versions
Most tests now pass

Still failing, due to timeouts:
    org.vertx.java.tests.core.redeploy.RedeployerTest

I found a way to execute the JRuby test suite without first installing JRuby; this requires providing the jruby-complete artifact on the test classpath, excluding the jruby artifact from the vertx-lang-jruby dependency, and installing required gems.
Add project metadata, exclude failing test
Beginning work on distribution package

Documentation generation is a WIP; only the java-core and Groovy docs
are being included at the moment (because those are the only ones
being generated…).
Fix multiple build errors

"mvn install" should now succeed with a fresh local Maven repository for everyone.

It really pays to nuke your local Maven repository periodically when creating new packages; stale artifacts can really ruin your day.
Added JRuby documentation
adding Python build_tools from vert.x/build-tools
jsdoc does not actually work for any of this source
Implement Python documentation generation

Had to tweak the included epydoc package to fix an issue when running under Ant, and modified the script to pull in properties from Ant.
Finalize distribution packaging
Update poms

Updating Maven config for changes between 1.2.3 and 1.3.1.
Bump version to 1.3.2-SNAPSHOT
Merge branch 'maven_build' into 1.3_maint

If I'm going to mantain this fork, it's going to be with Maven, not with fucking
Gradle.