Various modules which lacked routines to get at the sub-structures now
have them.
The tests have been tweaked so they only access internals where essential.
Fixed VS2005 version of make_modem_filter
Fixed a couple of places where declaration and definition of functions do not have the same calling conventions. Only relevant for Win32 compiles.
git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@13831 d0543943-73ff-0310-b7d9-9358b9ac24b2