[#1753] restore ilbc ...

...-common/libs/pjproject-1.0.3/pjmedia/build/os-auto.mak.in

...mon/libs/pjproject-1.0.3/pjmedia/src/pjmedia-codec/ilbc.c

...-common/libs/pjproject-1.0.3/pjmedia/src/test/mips_test.c

...mmon/libs/pjproject-1.0.3/third_party/build/ilbc/Makefile

...s/pjproject-1.0.3/third_party/build/ilbc/libilbccodec.dsp

...s/pjproject-1.0.3/third_party/build/ilbc/libilbccodec.vcp

...jproject-1.0.3/third_party/build/ilbc/libilbccodec.vcproj

...common/libs/pjproject-1.0.3/third_party/build/os-auto.mak

...mon/libs/pjproject-1.0.3/third_party/build/os-auto.mak.in