res_pjsip: Add res_pjproject dependency to UPGRADE.txt and samples

Since res_pjsip now depends on res_pjproject, this is now mentioned
in UPGRADE.txt and the basic-pbx modules.conf has been updated.

Change-Id: I42826597d5e10f08e518208860c44c96e52f1b2d

UPGRADE.txt

@@ -21,6 +21,13 @@
 === UPGRADE-12.txt  -- Upgrade info for 11 to 12
 ===========================================================
 
+From 13.7.0 to 13.8.0:
+
+res_pjsip:
+ - res_pjsip now depends on res_pjproject.  If autoload=no in modules.conf,
+   res_pjproject must be explicitly loaded or res_pjsip and all of its
+   dependents will fail to load.
+
 From 13.5.0 to 13.6.0:
 
 ARI:

configs/basic-pbx/modules.conf

@@ -66,6 +66,7 @@ load = pbx_functions.so
 
 load = res_hep_pjsip.so
 load = res_musiconhold.so
+load = res_pjproject.so
 load = res_pjsip_acl.so
 load = res_pjsip_authenticator_digest.so
 load = res_pjsip_caller_id.so