Use new plugin build.xml to build plugins
Use new gitversion macro instead of shelling to bash
Remove bash scripts for plugin generation
Change-Id: I368dbe4d3efa31381bf22a12fa8510918c4feb99
Depends-On: I6d650d700aa0bf6324fc877fe16970674dd07c0c
Reviewed-on: http://gerrit.dmdirc.com/2020
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Greg Holmes <greg@dmdirc.com>