Miscellaneous fixes

[bennylp]

This is the placeholder for miscellaneous or minor fixes

[bennylp]

In r3060:

• remove the code in pjsip_transport_udp.c that silently set SO_SNDBUF/SO_RCVBUF as it's not that useful for clients anyway and it would print error message on many platforms that don't support it, causing many concerns from users

[bennylp]

In r3066:

• Wrong endianness detection for Motorola m68k architecture in pj/config.h (thanks Andreas Wehrmann for the report)

[bennylp]

r3070:

• initialize display field of SIP name address to NULL, as some libc library (mingw with gcc4, msvcrt) has some problem with sprintf with zero length and invalid pointer (thanks Klaus Darilion for the report)

[nanang]

In r3072:

• missed PLC availability check in stream get_frame_ext().

[bennylp]

In r3073:

• incoming call event is not detected by PocketPJ sample application

[bennylp]

In r3088:

• PJLIB does not return the correct error code when TCP connection fails on Linux

[bennylp]

In r3093:

• swap the order of --dis-codec and --add-codec execution in pjsua, so that user can now enable specific codecs by specifying "--dis-codec * --add-codec THECODEC"

[bennylp]

In r3101:

• Fixed minor bug: custom ICE priority table must not assign greater priority for SRFLX than PRFLX candidate type (thanks Saúl Ibarra Corretgé for the report)

[bennylp]

In r3104:

• added svn_add.bat and svn_pset.bat, utilities to add new source files to repository

[bennylp]

In r3109:

• fixed wrong documentation of pjsua_acc_config.allow_contact_rewrite

[bennylp]

In 3118:

• added more documentation for PJNATH_EICEFAILED error code

[bennylp]

In r3132:

• added *.plg to svn:ignore property in g7221 build directory

[bennylp]

In r3141:

• added aectest to samples build

[bennylp]

In r3142:

• fixed wrong Unix detection in Python automated test

[nanang]

In r3146:

• moved payload type of G726-32 from static (was 2) to dynamic, and also disabled some more L16 codecs (thanks Bram Kuijvenhoven for the report).

[nanang]

In r3148, fixed build problems on Symbian S60 5th edition:

• link error undefined reference to `.L23' in function pjsip_cred_info_cmp() (thanks Ken Fish for the report).
• compile error unable to convert pj_uint32_t to pjsip_transport_state.

[bennylp]

(In [3152]) Miscellaneous fix (refs #1026): added svn ignore spec to depend file under g7221 directory