tests: print the command line to log

weston-tests-env is a beast to handle, when you would like to start
weston manually for a test you wan to start inside gdb. This patch
causes the full command line to be printed to the automake test logs, so
you can copy it from there and run it by hand.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Quentin Glidic <sardemff7+git@sardemff7.net>

tests/weston-tests-env

@@ -40,6 +40,7 @@ case $TEST_FILE in
 	ivi-*.la|ivi-*.so)
 		SHELL_PLUGIN=$MODDIR/ivi-shell.so
 
+		set -x
 		WESTON_BUILD_DIR=$abs_builddir \
 		WESTON_TEST_REFERENCE_PATH=$abs_top_srcdir/tests/reference \
 		$WESTON --backend=$MODDIR/$BACKEND \
@@ -52,6 +53,7 @@ case $TEST_FILE in
 			&> "$OUTLOG"
 		;;
 	*.la|*.so)
+		set -x
 		WESTON_BUILD_DIR=$abs_builddir \
 		WESTON_TEST_REFERENCE_PATH=$abs_top_srcdir/tests/reference \
 		$WESTON --backend=$MODDIR/$BACKEND \
@@ -65,6 +67,7 @@ case $TEST_FILE in
 	ivi-*.weston)
 		SHELL_PLUGIN=$MODDIR/ivi-shell.so
 
+		set -x
 		WESTON_BUILD_DIR=$abs_builddir \
 		WESTON_TEST_REFERENCE_PATH=$abs_top_srcdir/tests/reference \
 		WESTON_TEST_CLIENT_PATH=$abs_builddir/$TEST_FILE \
@@ -78,6 +81,7 @@ case $TEST_FILE in
 			&> "$OUTLOG"
 		;;
 	*)
+		set -x
 		WESTON_BUILD_DIR=$abs_builddir \
 		WESTON_TEST_REFERENCE_PATH=$abs_top_srcdir/tests/reference \
 		WESTON_TEST_CLIENT_PATH=$abs_builddir/$TEST_FILE \