Added support for all slin formats to app_originate

Added support for all slin formats to app_originate

Previously, app_originate could not originate a call into a non-8kHz conference
bridge as the formats for non-8kHz slin codecs were not applied to the created
channel.  This patch adds all of the formats by default, such that if a created
channel has a codec that supports a higher sampling rate, a translation path
can be built between it and other channels.

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/10@348265 65c4cc65-6c06-0410-ace0-fbb531ad65f3