Miscellaneous fixes

[bennylp]

This is placeholder for miscellaneous or minor fixes.

[bennylp]

In r2691:

• const correctness in some function call arguments

[bennylp]

In r2694:

• updated TURN compatibility to draft-ietf-behave-turn-14

[bennylp]

In r2696:

• should not print sound device creation to the log when the conference bridge is created with PJMEDIA_CONF_NO_DEVICE (thanks Fabio Cherchi for the report)

[bennylp]

In r2737:

• minor: added link to the ticket which changed the rule of PJSUA-LIB account re-registration

[bennylp]

In r2738:

• removed all Python doxygen comments/documentations from pjsua.h as this API has been deprecated by new Python API long time ago.

[bennylp]

In r2749:

• protect pj_strdup() for case when source and destination string are the same pointer. Without this, destination string will contain garbage value.

[bennylp]

In r2766:

• Misc fix (ticket #838): compilation warning when int is not typecasted to pjsip_transport_type_e enum in sip_util.c

[bennylp]

In r2767:

• fixed warning about unitialized status variable with gcc in addr_resolv_symbian.cpp

[bennylp]

In r2777:

• don't print error in MDA Symbian audio if MaiscRecordComplete?() or MaoscPlayComplete?() returns KErrCancel (-3). It always does that.

[nanang]

In r2779:

• added libpassthroughcodec.lib into symbian_ua_gui.mmp

[nanang]

In r2780:

• Updated symbian_ua_gui.mmp libraries order, previously there was linking error on MR when APS direct enabled.