Contribs: update zvbi to 0.2.33

It is safe (out since 2 years) and it doesn't break the ugly win32 port
I did...

extras/contrib/src/packages.mak

@@ -195,7 +195,7 @@ EXPAT_VERSION=2.0.0
 EXPAT_URL=$(SF)/expat/expat-$(EXPAT_VERSION).tar.gz
 PTHREADS_VERSION=2-8-0
 PTHREADS_URL=ftp://sources.redhat.com/pub/pthreads-win32/pthreads-w32-$(PTHREADS_VERSION)-release.tar.gz
-ZVBI_VERSION=0.2.30
+ZVBI_VERSION=0.2.33
 ZVBI_URL=$(SF)/zapping/zvbi-$(ZVBI_VERSION).tar.bz2
 TAGLIB_VERSION=1.7
 TAGLIB_URL=http://developer.kde.org/~wheeler/files/src/taglib-$(TAGLIB_VERSION).tar.gz