[mingw-gtk2] Use license macro for the COPYING file

[Kalev Lember]

commit 4a95c139bc4814380d8313b34f169fa0e0f30128
Author: Kalev Lember <kalevlember at gmail.com>
Date:   Tue Mar 24 12:22:02 2015 +0100

    Use license macro for the COPYING file

 mingw-gtk2.spec | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/mingw-gtk2.spec b/mingw-gtk2.spec
index d67db17..809ce66 100644
--- a/mingw-gtk2.spec
+++ b/mingw-gtk2.spec
@@ -187,7 +187,7 @@ rm -f $RPM_BUILD_ROOT%{mingw64_libdir}/gtk-2.0/modules/*.dll.a
 
 # Win32
 %files -n mingw32-gtk2 -f mingw32-gtk2.lang
-%doc COPYING
+%license COPYING
 %{mingw32_datadir}/themes/*
 %{mingw32_bindir}/gtk-builder-convert
 %{mingw32_bindir}/gtk-demo.exe
@@ -251,7 +251,7 @@ rm -f $RPM_BUILD_ROOT%{mingw64_libdir}/gtk-2.0/modules/*.dll.a
 
 # Win64
 %files -n mingw64-gtk2 -f mingw64-gtk2.lang
-%doc COPYING
+%license COPYING
 %{mingw64_datadir}/themes/*
 %{mingw64_bindir}/gtk-builder-convert
 %{mingw64_bindir}/gtk-demo.exe
@@ -317,6 +317,7 @@ rm -f $RPM_BUILD_ROOT%{mingw64_libdir}/gtk-2.0/modules/*.dll.a
 %changelog
 * Tue Mar 24 2015 Kalev Lember <kalevlember at gmail.com> - 2.24.27-1
 - Update to 2.24.27
+- Use license macro for the COPYING file
 
 * Tue Oct 14 2014 Kalev Lember <kalevlember at gmail.com> - 2.24.25-1
 - Update to 2.24.25