Updated default speex quality settings and reenabled pjsua to set Speex codec quality based on media quality config

git-svn-id: https://svn.pjsip.org/repos/pjproject/trunk@2004 74dad513-b988-da41-8d7b-12977e46ad98
diff --git a/pjmedia/include/pjmedia-codec/config.h b/pjmedia/include/pjmedia-codec/config.h
index d52044f..ac9ef91 100644
--- a/pjmedia/include/pjmedia-codec/config.h
+++ b/pjmedia/include/pjmedia-codec/config.h
@@ -59,10 +59,11 @@
 #endif
 
 /**
- * Speex codec default quality setting.
+ * Speex codec default quality setting. Please note that pjsua-lib may override
+ * this setting via its codec quality setting (i.e PJSUA_DEFAULT_CODEC_QUALITY).
  */
 #ifndef PJMEDIA_CODEC_SPEEX_DEFAULT_QUALITY
-#   define PJMEDIA_CODEC_SPEEX_DEFAULT_QUALITY	    5
+#   define PJMEDIA_CODEC_SPEEX_DEFAULT_QUALITY	    8
 #endif