spec: Fix minor changelog issues

When a changelog entry references an RPM macro, % needs to be escaped so
that it does not appear expanded in package changelog.

Fri Mar  4 2009 is incorrect since Mar 4 was Wednesday. Since
libvirt-0.6.1 was released on Mar 4 2009, we should change Fri to Wed.
(cherry picked from commit 53657a0a)

libvirt.spec.in

@@ -2250,7 +2250,7 @@ fi
 * Fri Apr  3 2009 Daniel Veillard <veillard@redhat.com> - 0.6.2-1
 - release of 0.6.2
 
-* Fri Mar  4 2009 Daniel Veillard <veillard@redhat.com> - 0.6.1-1
+* Wed Mar  4 2009 Daniel Veillard <veillard@redhat.com> - 0.6.1-1
 - release of 0.6.1
 
 * Sat Jan 31 2009 Daniel Veillard <veillard@redhat.com> - 0.6.0-1
@@ -2389,7 +2389,7 @@ fi
 - it's pkgconfig not pgkconfig !
 
 * Mon Nov  6 2006 Daniel Veillard <veillard@redhat.com> 0.1.8-2
-- fixing spec file, added %dist, -devel requires pkgconfig and xen-devel
+- fixing spec file, added %%dist, -devel requires pkgconfig and xen-devel
 - Resolves: rhbz#202320
 
 * Mon Oct 16 2006 Daniel Veillard <veillard@redhat.com> 0.1.8-1