Add make style targets.

These use a refined version of the doc/spice_indent tool to make sure
that all controlled sources follow the spice style guide.
Acked-by: Frediano Ziglio <fziglio@redhat.com>

doc/spice_indent

@@ -13,22 +13,21 @@
 #  func()
 #   That requires calling indent with some thoughtfulness
 # By default, it will break procedure types onto newlines
-#   if you have a file that does not do that, you may want
-#   to add
-# --dont-break-procedure-type
-# to your invocation.
+#   which is not always the desired behavior
+# Add  --dont-break-procedure-type  to change that
 
 
-if [ ! -f "$1" ] ; then
-    echo Error: specify a filename to process with indent
+if [ $# -lt 1 ] ; then
+    echo Error: specify at least one file to process with indent
     echo Usage:
-    echo   'spice_indent <filename> [ extra-options ]'
+    echo '  spice_indent [ extra-options ] <filename> [ filename... ]'
+    echo 'A useful option is --dont-break-procedure-type'
     exit 1
 fi
-fname="$1"
-shift
 
-indent "$fname" \
+# Run the indent command with no version control; we're using git after all...
+VERSION_CONTROL=none \
+indent \
   --no-space-after-function-call-names \
   --braces-after-func-def-line \
   --braces-on-if-line \

spice-video-dummy/src/Makefile.am

@@ -39,3 +39,6 @@ spicedummy_drv_la_SOURCES = \
          display.c \
          dummy.h \
          present.c
+
+style: $(spicedummy_drv_la_SOURCES)
+	$(top_srcdir)/../doc/spice_indent $^

src/Makefile.am

@@ -48,3 +48,6 @@ EXTRA_DIST = \
 if HAVE_GTEST
     SUBDIRS = tests
 endif
+
+style: $(x11spice_SOURCES)
+	$(top_srcdir)/doc/spice_indent --dont-break-procedure-type $^

src/tests/Makefile.am

@@ -39,3 +39,6 @@ callgrind.out.x:
 
 clean-local:
 	rm -f callgrind.out.*
+
+style: $(x11spice_test_SOURCES)
+	$(top_srcdir)/doc/spice_indent --dont-break-procedure-type $^