[libcroco] Remove croco-install.props's during re-generation

[Chun-wei Fan <fanchunwei src gnome org>]

commit 6c9dfc4b7b9d564058398cf30ac41210427c395a
Author: Chun-wei Fan <fanchunwei src gnome org>
Date:   Wed Oct 19 19:32:01 2016 +0800

    Remove croco-install.props's during re-generation
    
    This is to ensure the changes in the generated
    build/win32/vs10/croco-install.props are applied in
    build/win32/vs[11|12|14] as well.

 build/win32/vs10/Makefile.am |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/build/win32/vs10/Makefile.am b/build/win32/vs10/Makefile.am
index a102242..94582e1 100644
--- a/build/win32/vs10/Makefile.am
+++ b/build/win32/vs10/Makefile.am
@@ -36,6 +36,9 @@ EXTRA_DIST = \
        $(GENERATED_ITEMS)
 
 croco-install.props: $(top_srcdir)/build/win32/vs10/croco-install.propsin croco.vs10.headers
+       -$(RM) $(top_builddir)/build/win32/vs11/croco-install.props
+       -$(RM) $(top_builddir)/build/win32/vs12/croco-install.props
+       -$(RM) $(top_builddir)/build/win32/vs14/croco-install.props
        $(CPP) -P - <$(top_srcdir)/build/win32/vs10/croco-install.propsin > $@
        rm croco.vs10.headers