Commit: develop plugin

As we don't have commit mails for SVN yet:

r21228 /abiword-plugins/trunk/tools/develop/ (74 files in 4 dirs):
A develop plugin. Implements syntaxhighlighting for languages such as C
++, Python, LaTeX and more. To compile this, it requires an unfinished
patch against fp_TextRun, which will be provided
really soon.

Ugly patch attached agains fp_TextRun, which I won't commit yet (it
breaks RtL and selections, and it just doesn't feel 'right' yet).

Mandatory screenshot: http://uwog.net/news/?p=78

Marc