Revert "WebKit1: Cookies persistence support"

This reverts commit 25bd02187078b272205038d6ba9cfba5de59899c.
Revert "[GStreamer] disable webkitwebsrc"

This reverts commit 783777e04c3d0931780d41416fc2b933574b7635.
Use Q_* macro instead of their equivalent keywords

Some of those keywords are no longer usable after the libsoup headers
have been included.
[Qt] libsoup support

Optionally replace the Qt ResourceLoader with the libsoup
implementation. The libsoup backend is more efficient, especially when
loading media resources, it's also optimized to reduce the number of
memcpy() calls for that scenario.
[Qt][WK1][SOUP] Persistent cookie storage support