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Change-Id: Ie0b634cf27e4cbc671b9fe92993b6f2ecf60254c
-res_pjsip: Added a norefersub configuration setting
+Subject: res_pjsip
Added a new PJSIP global setting called norefersub.
Default is true to keep support working as before.
-res_pjsip_refer: Configures PJSIP norefersub capability accordingly.
+res_pjsip_refer configures PJSIP norefersub capability accordingly.
Checks the PJSIP global setting value.
If it is true (default) it adds the norefersub capability to PJSIP.