syntax-check: check QEMU caps grouping

Introduce a perl script that is able to regroup both
the QEMU_CAPS constants and the capability strings.

Check correct grouping as a part of syntax check.

For in-place regrouping after a rebase, just run:
  tests/group-qemu-caps.pl
without any parameters.

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>

cfg.mk

@@ -1098,7 +1098,7 @@ _autogen_error:
 
 ifneq ($(_gl-Makefile),)
 syntax-check: spacing-check test-wrap-argv \
-	prohibit-duplicate-header mock-noinline
+	prohibit-duplicate-header mock-noinline group-qemu-caps
 endif
 
 # Don't include duplicate header in the source (either *.c or *.h)
@@ -1119,6 +1119,9 @@ test-wrap-argv:
 	$(AM_V_GEN)files=`$(VC_LIST) | grep -E '\.(ldargs|args)'`; \
 	$(PERL) $(top_srcdir)/tests/test-wrap-argv.pl --check $$files
 
+group-qemu-caps:
+	$(PERL) $(top_srcdir)/tests/group-qemu-caps.pl --check
+
 # sc_po_check can fail if generated files are not built first
 sc_po_check: \
 		$(srcdir)/src/remote/remote_daemon_dispatch_stubs.h \