[gdk-pixbuf] Remove gdk-pixbuf-install.props's on re-generation

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

commit 0142c4ad1b8557dcc510399b621a263e7e062018
Author: Chun-wei Fan <fanchunwei src gnome org>
Date:   Wed Oct 19 15:49:21 2016 +0800

    Remove gdk-pixbuf-install.props's on re-generation
    
    This ensures the changes to the generated build/win32/vs10/gdk-pixbuf-install.props is
    also applied to 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 0ad5459..62e8433 100644
--- a/build/win32/vs10/Makefile.am
+++ b/build/win32/vs10/Makefile.am
@@ -24,6 +24,9 @@ EXTRA_DIST = \
        math.h
 
 gdk-pixbuf-install.props: $(top_srcdir)/build/win32/vs10/gdk-pixbuf-install.propsin gdk-pixbuf.vs10.headers
+       -$(RM) $(top_builddir)/build/win32/vs11/gdk-pixbuf-install.props
+       -$(RM) $(top_builddir)/build/win32/vs12/gdk-pixbuf-install.props
+       -$(RM) $(top_builddir)/build/win32/vs14/gdk-pixbuf-install.props
        $(CPP) -P - <$(top_srcdir)/build/win32/vs10/gdk-pixbuf-install.propsin >$@
        rm gdk-pixbuf.vs10.headers