pfSense

• Create two new functions lock($subsystem)/unlock() to have more reliable locking using semaphores.
  This function can sleep till the resource is free and can help find not well behaving code.
• Remove most of the config_lock/config_unlock logics on the whole scripts/pages it is an abuse of this....

Fix OpenVPN automatic shared key generation.

Fix detection of TLS/Shared Key mode for OpenVPN
The wrong variable was being checked, so the result was always false.

From yesterday moving of ipfw loading to only captive portal a regression was noticed on ipfw states sizeing.
Fix this regression by changing this states when they are changed on the system advanced settings page.

Reported by: cmb@

Correctly enforce limits on html input.

Fix server hostname resolve option to correctly be set.

Move validation of dyndns username to the only place it uses it, the GUI page. There it makes sense. While there add ':' character to allow NO-ip subaccounts.

Fix CLI filter parser so it works on FreeBSD 8 builds.

Unbreak log display on FreeBSD 8 based builds of 2.0.
pflog output in FreeBSD 8 spans two lines, so we need a function to collapse those two lines into one line we can parse. Also deal with some other resulting oddities of parsing the new format.

Remove unused function and function that provide the same functionality as php built-in ones.