[pango] build/win32/vs10/Makefile.am: Remove pango-install.props's on re-generation

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

commit fa98b9c23aea244b97b893d5ecc0190fa4b4cdf8
Author: Chun-wei Fan <fanchunwei src gnome org>
Date:   Wed Oct 19 15:33:56 2016 +0800

    build/win32/vs10/Makefile.am: Remove pango-install.props's on re-generation
    
    This is to ensure that any changes that was made to the generated
    build/win32/vs10/pango-install.props will also be 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 1ba048f..ba3e8d5 100644
--- a/build/win32/vs10/Makefile.am
+++ b/build/win32/vs10/Makefile.am
@@ -31,6 +31,9 @@ EXTRA_DIST =  \
        $(GENERATED_ITEMS)
 
 pango-install.props: $(top_srcdir)/build/win32/vs10/pango-install.propsin pango.vs10.headers
+       -$(RM) $(top_builddir)/build/win32/vs11/pango-install.props
+       -$(RM) $(top_builddir)/build/win32/vs12/pango-install.props
+       -$(RM) $(top_builddir)/build/win32/vs14/pango-install.props
        $(CPP) -P - <$(top_srcdir)/build/win32/vs10/pango-install.propsin >$@
        rm pango.vs10.headers