Don't accept new connection or process register events when reloading config.

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@5566 43c1dc8c-776e-4df2-8ef1-6e829299be21
Reject registration events while reloading config (We should actually be using a reload_lock for this).

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@5567 43c1dc8c-776e-4df2-8ef1-6e829299be21
Enhancement: Removed some of the dedicated config_parsers in favor of the generic enum parser

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@5568 43c1dc8c-776e-4df2-8ef1-6e829299be21