Update the libvirt package in 42.2 to match SLE12 SP2.
For 42.2, I'd like the libvirt package to be based on the
same one in SP2 to easily share maintenance.

- xenconfig: fix conversion of to backendtype
e33cd67a-xenconfig-backendtype-fix.patch
bsc#984798

- Advertise aarch64 UEFI firmware paths
- adjust spec file to include aarch64 paths in
'--with-loader-nvram=' configure option
- adjust qemu.conf 'nvram' option to include the SUSE paths
bsc#981836, bsc#983747

- apparmor: Don't scrub environment of virtlogd process
apparmor-dont-scrub-environment-of-virtlogd-process.patch
boo#980441

- Update to libvirt 1.3.5
- Many incremental improvements and bug fixes, see
http://libvirt.org/news.html
- Dropped patches:
e4d131b8-mv-virDomainDefPostParseInternal.patch,
3e428670-post-parse-implicit-video.patch,
538012c8-default-vram.patch, 96b21fb0-vram-tests.patch,
400e716d-libxl-noprope-emulator.patch,
b90c4b5f-tests-use-qemu-xen.patch,
libxl-api-version4.4.patch,
libxl-migv2-save-restore.patch, libxl-migv2-migration.patch,
a1c9a81a-libxl-rbd-fix.patch,
ba566428-libxl-dom-iface-addrs.patch
- FATE#316228, FATE#316628, FATE#319531, FATE#319810,
FATE#320490
- Includes fixes for bsc#903757, bsc#936524, bsc#948686,