first go at cleaning up the code

fix audio captcha. closes #115

It seems browsers pass different accept-encoding headers now for the
audio request, breaking auth_browseruid()

auto reformat code

Curly braces changed to brackets

added new mode SVG

This mode generates an SVG image an inlines it. This is much easier to
read than the obfuscated image but should still be relatively hard for
most spammers (until they start handl

added new mode SVG

This mode generates an SVG image an inlines it. This is much easier to
read than the obfuscated image but should still be relatively hard for
most spammers (until they start handling inline SVGs).

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Limit length of generated string

don't use deprecated blowfish libs. fixes #24

only falls back to blowfish on old wiki versions

fix audio output when non-default letter count is set

some reformatting

don't let wave generator create anything unless audio is enabled

Don't use realpath(). closes #1

Moved some parts to a helper plugin for reuse in other plugins

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initial checkin

darcs-hash:20070109215204-7ad00-911102ca792d59b403fea07473621236672a23ee.gz