[gobject-introspection] tests: prevent warnings with some make implementations

[Colin Walters <walters src gnome org>]

commit bb362a16e18f8c0c3d4049b4cf181b956a871554
Author: Dieter Verfaillie <dieterv optionexplicit be>
Date:   Thu Sep 19 10:20:30 2013 +0200

    tests: prevent warnings with some make implementations
    
    some make implementations don't like empty $(AM_V_GEN) rule
    commands, see http://lists.gnu.org/archive/html/bug-coreutils/2009-04/msg00251.html
    for more info.

 tests/scanner/Makefile.am |   12 ++++--------
 1 files changed, 4 insertions(+), 8 deletions(-)
---
diff --git a/tests/scanner/Makefile.am b/tests/scanner/Makefile.am
index cf52eac..a1c0ecf 100644
--- a/tests/scanner/Makefile.am
+++ b/tests/scanner/Makefile.am
@@ -159,23 +159,19 @@ EXPECTED_MALLARD_DIRS = $(MALLARD_DIRS:=-expected)
 CLEANFILES += $(MALLARD_CLEAN)
 
 %-C: %.gir
-       $(AM_V_GEN)
-       $(AM_V_at)-rm -rf $(builddir)/$*-C
+       $(AM_V_GEN)rm -rf $(builddir)/$*-C
        $(AM_V_at)$(INTROSPECTION_DOCTOOL) $(INTROSPECTION_DOCTOOL_ARGS) --language C $*.gir -o 
$(builddir)/$*-C/
 
 %-Python: %.gir
-       $(AM_V_GEN)
-       $(AM_V_at)-rm -rf $(builddir)/$*-Python
+       $(AM_V_GEN)rm -rf $(builddir)/$*-Python
        $(AM_V_at)$(INTROSPECTION_DOCTOOL) $(INTROSPECTION_DOCTOOL_ARGS) --language Python $*.gir -o 
$(builddir)/$*-Python/
 
 %-Gjs: %.gir
-       $(AM_V_GEN)
-       $(AM_V_at)-rm -rf $(builddir)/$*-Gjs
+       $(AM_V_GEN)rm -rf $(builddir)/$*-Gjs
        $(AM_V_at)$(INTROSPECTION_DOCTOOL) $(INTROSPECTION_DOCTOOL_ARGS) --language Gjs $*.gir -o 
$(builddir)/$*-Gjs/
 
 %-sections.txt: %.gir
-       $(AM_V_GEN)
-       $(AM_V_at)$(INTROSPECTION_DOCTOOL) $(INTROSPECTION_DOCTOOL_ARGS) --write-sections-file $*.gir -o $@
+       $(AM_V_GEN)$(INTROSPECTION_DOCTOOL) $(INTROSPECTION_DOCTOOL_ARGS) --write-sections-file $*.gir -o $@
 
 %-C.page.check: %-C
        @diff -r -u -w -B -U 10 $(srcdir)/$*-C-expected $(builddir)/$*-C && echo "  TEST  $*-C"