Compressing the tarball with xz would save about 9 MB, see http://thread.gmane.org/gmane.linux.redhat.fedora.devel/181336 and let me know if you'd like me to take care of this for devel.

diff --git a/community-mysql.spec b/community-mysql.spec
index 267cb6b..6b929f7 100644
--- a/community-mysql.spec
+++ b/community-mysql.spec
@@ -20 +20 @@ License: GPLv2 with exceptions and LGPLv2 and BSD
-Source0: mysql-%{version}-nodocs.tar.gz
+Source0: mysql-%{version}-nodocs.tar.xz
diff --git a/generate-tarball.sh b/generate-tarball.sh
index d3e859b..7781f32 100755
--- a/generate-tarball.sh
+++ b/generate-tarball.sh
@@ -12 +12 @@ rm mysql-$VERSION/man/*
-tar cfz mysql-$VERSION-nodocs.tar.gz mysql-$VERSION || exit 1
+tar cfJ mysql-$VERSION-nodocs.tar.xz mysql-$VERSION || exit 1