xen: Rename of xSplice to livepatch.

Specifically:

s/\.xsplice/\.livepatch/
s/XSPLICE/LIVEPATCH/
s/xsplice/livepatch/
s/livepatch_patch_func/livepatch_func/
s/xSplice/Xen Live Patch/
s/livepatching/livepatch/
s/arch_livepatch_enter/arch_livepatch_quiesce/
s/arch_livepatch_exit/arch_livepatch_revive/

And then modify some of the function arguments
to have two more characters.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Release-acked-by: Wei Liu <wei.liu2@citrix.com>

MAINTAINERS

@@ -261,6 +261,16 @@ F:      xen/include/{kexec,kimage}.h
 F:      xen/arch/x86/machine_kexec.c
 F:      xen/arch/x86/x86_64/kexec_reloc.S
 
+LIVEPATCH
+M:  Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
+M:  Ross Lagerwall <ross.lagerwall@citrix.com>
+S:  Supported
+F:  docs/misc/livepatch.markdown
+F:  tools/misc/xen-livepatch.c
+F:  xen/arch/*/livepatch*
+F:  xen/common/livepatch*
+F:  xen/include/xen/livepatch*
+
 MACHINE CHECK (MCA) & RAS
 M:	Christoph Egger <chegger@amazon.de>
 M:	Liu Jinsong <jinsong.liu@alibaba-inc.com>
@@ -470,16 +480,6 @@ F:  xen/include/xsm/
 F:  xen/xsm/
 F:  docs/misc/xsm-flask.txt
 
-XSPLICE
-M:  Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
-M:  Ross Lagerwall <ross.lagerwall@citrix.com>
-S:  Supported
-F:  docs/misc/xsplice.markdown
-F:  tools/misc/xen-xsplice.c
-F:  xen/arch/*/xsplice*
-F:  xen/common/xsplice*
-F:  xen/include/xen/xsplice*
-
 THE REST
 M:	Andrew Cooper <andrew.cooper3@citrix.com>
 M:	George Dunlap <George.Dunlap@eu.citrix.com>