build cleanup and improvements; plugin directory strucutes

build cleanup and improvements; plugin directory strucutes


For anyone using jQuery's ant build:
I've cleaned up the build.xml, removing all the now-useless targets like
lite and docs. Also added a script that replaces @VERSION with the
content from version.txt, so you'll always get a build that includes a
version number.
On that matter I also propose to to always update version.txt to the
next milestone after a release. That makes it easier to identify "latest
revisions". I've changed version.txt to "1.2.2-pre" for that. Once 1.2.2
is released and tagged, it should be changed to 1.2.3-pre or 1.3-pre or
whatever comes next. Or 1.2.2-post until the next milestone is settled.
Regards
Jörn