Re #1694: fixed bug in the previous commit with the RTP config instantiation

git-svn-id: file:///mirror/SvnSyncs/PJ/repos/pjproject/trunk@4611 bdd19603-ad22-4b21-bbe5-5c27d6d023c3
Misc (re #1630): fixed error in parsing ldflags for building Python module

git-svn-id: file:///mirror/SvnSyncs/PJ/repos/pjproject/trunk@4612 bdd19603-ad22-4b21-bbe5-5c27d6d023c3
Re #1703: fixing general bugs. First installment: correct handling of snprintf return value

git-svn-id: file:///mirror/SvnSyncs/PJ/repos/pjproject/trunk@4613 bdd19603-ad22-4b21-bbe5-5c27d6d023c3
Re #1703 General bug fixes: fixed wrong sizeof() in call to bzero(), memset(), or memcpy()

git-svn-id: file:///mirror/SvnSyncs/PJ/repos/pjproject/trunk@4614 bdd19603-ad22-4b21-bbe5-5c27d6d023c3
Re #1703 General bug fixes: fixed some wrong null checking order

git-svn-id: file:///mirror/SvnSyncs/PJ/repos/pjproject/trunk@4615 bdd19603-ad22-4b21-bbe5-5c27d6d023c3
Re #1703 General bug fixes: fixed mutex not released on some error condition

git-svn-id: file:///mirror/SvnSyncs/PJ/repos/pjproject/trunk@4616 bdd19603-ad22-4b21-bbe5-5c27d6d023c3
Re #1697: Use AVAudioSession to set audio session category and activate/deactivate audio session



git-svn-id: file:///mirror/SvnSyncs/PJ/repos/pjproject/trunk@4617 bdd19603-ad22-4b21-bbe5-5c27d6d023c3