Typos.
Update example config for menu command changes
Minor cleanups in download.sh
Free menu items
Fix quoting in formfiller.sh
Handle comments in the core function

This allows comments and empty lines to be ignored in:

    uzbl-core -c - < file
Notify global plugins of new uzbl instances
Fix global plugin notifications
Fix some minor whitespace nits
Add support for TLS error handling
Improve docs for synchronous handlers
Remove no-op variable storage

These variables aren't special and can be treated as user variables just
fine.
Add a NAVIGATION_STARTING event
Add includes and defines for older glibc

_DEFAULT_SOURCE apparently isn't like _BSD_SOURCE, so _XOPEN_SOURCE=600
is required for some functions.
Better error information from per-site-settings