fix unit handling of all python extensions. did not test with all extensions

Fix extensions that fail unit tests

Extensions. Fix for bug #887539 (Permissions and #! in extension scripts need fixing).

Super duper mega (fun!) commit: replaced encoding=utf-8 with fileencoding=utf-8 in all 1074 Vim modelines. The reason for this is that (a) setting the encoding isn't nice, and (b) Vim 7.3 (with modeline enabled) disallows it and pops up an error whenever you open any file with it ("invalid modeline"). Also corrected five deviant modestrings: * src/ui/widget/dock.cpp and src/ui/widget/dock.h: missing colon at the end * src/ui/dialog/tile.cpp: removed gratuitous second colon at the end * src/helper/units-test.h: removed gratuitous space before a colon * share/extensions/export_gimp_palette.py: missing textwidth=99 That's my geekiest commit yet.

commit patch for LaTeX equation render extension by Christoph Schmidt-Hieber

share/extensions/*.py: Wrap ‘e = MyEffect(); e.affect()’ in ‘if __name__ == '__main__':’, to allow use of pychecker.

noop: Add vim modeline for all share/extensions/*.py files that use four-space indentation.

share/extension/*.py: noop: minor whitespace regularizations ahead of adding vim modelines

Applying revised Latex fix for LP #55273 - adds quotes for Win32

Apply latex formula patch from LP #55273

commit patch for LaTeX extension. fixes bug #195052

fix LaTeX extension to work with the new lxml lib

Made it work again if Inkscape is installed on different drive than temp dir. fixed pstoedit commandline that did not work on Win32.

fixed temporary files management in eqtexsvg extension

added user unit conversion to eqtexsvg extension

fixes related to bugs (#1495693,#1500967,#1555211) with the eqtexsvg plugin (ie LaTeX Formula): - uses better svg parsing technique - does better tmp file creation - uses plot-svg pstoedit driver to produce svgs - does not use -output-dir with latex - other minor fixes and improvements thanks to Roman S Dubtsov

Added amsmath package

Added Marcus Brubaker's patch to the script...he updated...closing his patch

add to current layer, not root

standardize indents on 4 spaces Python hates mixed whitespace

add latex formula renderer