fix portaudio build on ppc, thanks puzzled on irc.

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@3392 d0543943-73ff-0310-b7d9-9358b9ac24b2

libs/portaudio.build.sh

@@ -45,6 +45,9 @@ fi
 if [ $arch = "amd64" ] ; then
 opts="-fPIC"
 fi
+if [ $arch = "ppc" ] ; then
+opts="-fPIC"
+fi
 
 CFLAGS=$opts ./configure $@
 $MAKE