Squashed 'cgilite/' changes from b8cec22..a1caf91

Squashed 'cgilite/' changes from b8cec22..a1caf91

a1caf91 include guard for main script, prevent double read of post data
147c722 mime types for streaming formats
1caf684 prevent line breaks in debug message
06a4763 try reading session key from post before trying cookie
1462517 escape CR and TAB in URLs
00ba4b0 avoid confusion regarding carriage return when escaping HTML (especially in textarea)
238f0f8 rudimentary debug function

git-subtree-dir: cgilite
git-subtree-split: a1caf91a5e6ab2d13790ec6a0c1eaf2b4030a0e8