Bug#1148039: libproxy: disable webkit2gtk dependency, at least on big-endian

[Simon McVittie]

Source: libproxy
Severity: normal
Tags: forky sid
X-Debbugs-Cc: debian-s390 at lists.debian.org
User: debian-s390 at lists.debian.org
Usertags: s390x
Control: block 1148038 by -1

As announced in #1148038, new upstream releases of WebKitGTK no longer 
support big-endian architectures.

Removing libproxy from the big-endian architectures would be rather 
disruptive, so we should build it without WebKitGTK support on those 
archtiectures instead (minimally s390x, and ideally also some -ports 
architectures: hppa m68k powerpc ppc64 sparc64).

I think the build-dependencies on libjavascriptcoregtk-4.1-dev and 
libwebkit2gtk-4.1-dev might be entirely vestigial: perhaps they can just 
be removed, on all architectures? That would be simpler.

    smcv