criu: Version 2.8

So, this time we've mostly have a lot of code rework for
compel. A big portion of it is still in criu-dev, but
some has been merged into master.

Other than this and a bunch of bugfixes -- .config file,
support for Tun-Tap devices and deprecation of several
CLI and RPC options by the --external one.
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

Makefile.versions

 #
 # CRIU version.
 CRIU_VERSION_MAJOR	:= 2
-CRIU_VERSION_MINOR	:= 7
+CRIU_VERSION_MINOR	:= 8
 CRIU_VERSION_SUBLEVEL	:=
 CRIU_VERSION_EXTRA	:=
-CRIU_VERSION_NAME	:= Rubber Owl
+CRIU_VERSION_NAME	:= Bronze Siskin
 CRIU_VERSION		:= $(CRIU_VERSION_MAJOR)$(if $(CRIU_VERSION_MINOR),.$(CRIU_VERSION_MINOR))$(if $(CRIU_VERSION_SUBLEVEL),.$(CRIU_VERSION_SUBLEVEL))$(if $(CRIU_VERSION_EXTRA),.$(CRIU_VERSION_EXTRA))
 
 export CRIU_VERSION_MAJOR CRIU_VERSION_MINOR CRIU_VERSION_SUBLEVEL