coccicheck: Allow the user to give a V= (verbose) argument

Do not run with verbosity on/off depending on the ONLINE variable,
which gets set with C=1 or C=2, but allow the user to set the
verbosity using kernel default make V= paramemter.
Verbosity is off by default now.

Signed-off-by: Bernd Schubert <bernd.schubert@itwm.fraunhofer.de>
CC: Julia Lawall <Julia.Lawall@lip6.fr>
Acked-by: Nicolas Palix <nicolas.palix@imag.fr>
Signed-off-by: Michal Marek <mmarek@suse.cz>

Documentation/coccinelle.txt

@@ -87,6 +87,10 @@ As any static code analyzer, Coccinelle produces false
 positives. Thus, reports must be carefully checked, and patches
 reviewed.
 
+To enable verbose messages set the V= variable, for example:
+
+   make coccicheck MODE=report V=1
+
 
  Using Coccinelle with a single semantic patch
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

scripts/coccicheck

@@ -2,6 +2,15 @@
 
 SPATCH="`which ${SPATCH:=spatch}`"
 
+# The verbosity may be set by the environmental parameter V=
+# as for example with 'make V=1 coccicheck'
+
+if [ -n "$V" -a "$V" != "0" ]; then
+	VERBOSE=1
+else
+	VERBOSE=0
+fi
+
 if [ "$C" = "1" -o "$C" = "2" ]; then
     ONLINE=1
 
@@ -55,7 +64,7 @@ coccinelle () {
 #
 #    $SPATCH -D $MODE $FLAGS -parse_cocci $COCCI $OPT > /dev/null
 
-    if [ "$ONLINE" = "0" ] ; then
+    if [ $VERBOSE -ne 0 ] ; then
 
 	FILE=`echo $COCCI | sed "s|$srctree/||"`