webrtcdsp plugin disabled on Windows due to path length limitation causing build failure in webrtc-audio-processing

Submitted by Sebastian Dröge (slomo)

Link to original bug (#770264)

Description

libtool: link: (cd .libs/libwebrtc_audio_processing.lax/libaudio_coding.a && x86_64-w64-mingw32-ar x "/usr/home/slomo/cerbero/build/sources/windows_x86_64/webrtc-audio-processing-0.2/webrtc/modules/audio_processing/../../../webrtc/modules/audio_coding/.libs/libaudio_coding.a")
libtool: link: (cd .libs/libwebrtc_audio_processing.lax/libwebrtc_audio_processing_privatearch.a && x86_64-w64-mingw32-ar x "/usr/home/slomo/cerbero/build/sources/windows_x86_64/webrtc-audio-processing-0.2/webrtc/modules/audio_processing/./.libs/libwebrtc_audio_processing_privatearch.a")
libwebrtc_audio_processing_privatearch_la-aec_core_sse2.o: No such file or directory
make: *** [libwebrtc_audio_processing.la] Error 1

The problem here is that it's trying to create/extract that file in a path that is already quit long. If the filename had 2 letters less, it would work.

Version: 1.11.90