skypiax: Linux (XWin signaling actually) now manages the case when a 'continue' atom(s) is received before the 'begin' atom. That's in preparation for managing IM chatting

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@14843 d0543943-73ff-0310-b7d9-9358b9ac24b2