Add a vala(api) virtual provide that xfce-vala can depend on

vala.spec

@@ -3,7 +3,7 @@
 
 Name:           vala
 Version:        0.28.0
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        A modern programming language for GNOME
 
 # Most files are LGPLv2.1+, curses.vapi is 2-clause BSD
@@ -40,6 +40,8 @@ Obsoletes: compat-vala022 < 0.24
 Obsoletes: emacs-vala < 0.27.1
 Obsoletes: emacs-vala-el < 0.27.1
 
+Provides: vala(api) = %{api_ver}
+
 %description
 Vala is a new programming language that aims to bring modern programming
 language features to GNOME developers without imposing any additional
@@ -231,6 +233,9 @@ done
 
 
 %changelog
+* Mon May 25 2015 Kalev Lember <kalevlember@gmail.com> - 0.28.0-2
+- Add a vala(api) virtual provide that xfce-vala can depend on
+
 * Sun Mar 22 2015 Kalev Lember <kalevlember@gmail.com> - 0.28.0-1
 - Update to 0.28.0