When building for x86 in a x86_64 host (e.g. with pbuilder) CMake
will set CMAKE_SYSTEM_PROCESSOR to x86_64, and WebKit will assume
that it's a 64-bit build. Let's use the C++ compiler architecture as
a temporary solution to detect x86 correctly.
===================================================================
* Rebuild for buster-security.
* debian/patches/force-single-process.patch:
+ Force the single-process mode in Evolution and Geary
* debian/control:
+ Remove Breaks for Evolution < 3.34.1.
+ Remove build dependency on libwpebackend-fdo-1.0-dev.
+ Switch build dependency from libenchant-2-dev to libenchant-dev.