Squashed 'cgilite/' changes from f0383ee..5b013b6

5b013b6 bugfix: allow empty query string
7e6d863 improved handling of Connection header
87f88f1 quicker path sanitizing
06edc60 sanitizing and security
73550e0 updated copyright line
5a99761 speed improvements
7335b73 allow empty script headers

git-subtree-dir: cgilite
git-subtree-split: 5b013b64b7bbc9a62775ed861e9c8b34ffb3dfaa

Squashed 'cgilite/' content from commit f0383ee

git-subtree-dir: cgilite
git-subtree-split: f0383eeb634ce1ae71bfb409a9bc25d84b6d79e9