Add some boilerplate documentation for IAXVAR and IAXPEER.

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.8@355904 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_iax2.c

@@ -165,7 +165,9 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
 				</enumlist>
 			</parameter>
 		</syntax>
-		<description></description>
+		<description>
+			<para>Gets information associated with the specified IAX2 peer.</para>
+		</description>
 		<see-also>
 			<ref type="function">SIPPEER</ref>
 		</see-also>
@@ -177,7 +179,9 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
 		<syntax>
 			<parameter name="varname" required="true" />
 		</syntax>
-		<description></description>
+		<description>
+			<para>Gets or sets a variable that is sent to a remote IAX2 peer during call setup.</para>
+		</description>
 	</function>
 	<manager name="IAXpeers" language="en_US">
 		<synopsis>