Added another WSOLA implementation, PJMEDIA_WSOLA_IMP_WSOLA_LITE, this is used by small devices by default (replacing PJMEDIA_WSOLA_IMP_NULL)

git-svn-id: https://svn.pjsip.org/repos/pjproject/trunk@1971 74dad513-b988-da41-8d7b-12977e46ad98
diff --git a/pjlib/include/pj/config_site_sample.h b/pjlib/include/pj/config_site_sample.h
index 63c9470..33699d8 100644
--- a/pjlib/include/pj/config_site_sample.h
+++ b/pjlib/include/pj/config_site_sample.h
@@ -26,7 +26,7 @@
 #   define PJMEDIA_HAS_SPEEX_AEC	0
 #   undef PJMEDIA_RESAMPLE_IMP
 #   define PJMEDIA_RESAMPLE_IMP		PJMEDIA_RESAMPLE_LIBRESAMPLE
-#   define PJMEDIA_WSOLA_IMP		PJMEDIA_WSOLA_IMP_NULL
+#   define PJMEDIA_WSOLA_IMP		PJMEDIA_WSOLA_IMP_WSOLA_LITE
 #endif
 
 
@@ -50,7 +50,7 @@
     /* Disable these */
 #   define PJMEDIA_RESAMPLE_IMP		PJMEDIA_RESAMPLE_NONE
 #   define PJMEDIA_HAS_SPEEX_AEC	0
-#   define PJMEDIA_WSOLA_IMP		PJMEDIA_WSOLA_IMP_NULL
+#   define PJMEDIA_WSOLA_IMP		PJMEDIA_WSOLA_IMP_WSOLA_LITE
 
     /* Disable all codecs but G.711 and GSM, for now */
 #   define PJMEDIA_HAS_GSM_CODEC	1