Simplify cmake option handling by putting everything in blocks.

Add openssl patch as there's no easy way to disable.

Rebase the skip manpages patch.

Remove the monitor mode patch as it no longer applies.

Remove flex patch as normal Makefile is no longer used.

Remove USB path patch. While it is deprecated, the codepath is never
taken. /sys/bus/usb/devices is checked before hand. If it exists, the
function does stuff and returns. Additionally, this path is used
elsewhere in the code.

Refresh other patches.

Signed-off-by: Rosen Penev <rosenp@gmail.com>