[libsigc++2] Update .gitignore

[Kjell Ahlstedt <kjellahl src gnome org>]

commit a5e4ec7ef69dd8763a3cec8d581536b5bc59b591
Author: Kjell Ahlstedt <kjell ahlstedt bredband net>
Date:   Mon Sep 7 15:09:13 2015 +0200

    Update .gitignore

 .gitignore |    6 ++----
 1 files changed, 2 insertions(+), 4 deletions(-)
---
diff --git a/.gitignore b/.gitignore
index 5a352e2..14155c1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,10 +7,8 @@ Makefile.in
 *.l[ao]
 *~
 /INSTALL
-/MSVC_Net200[58]/sigc.rc
-/MSVC_Net200[58]/sigc++config.h
-/MSVC_Net2010/sigc.rc
-/MSVC_Net2010/sigc++config.h
+/MSVC_Net201?/sigc.rc
+/MSVC_Net201?/sigc++config.h
 /aclocal.m4
 /autom4te.cache/
 /config.h