fix build for SLES 9

OBS-URL: https://build.opensuse.org/package/show/openSUSE:Tools/build?expand=0&rev=105

build.spec

@@ -38,7 +38,7 @@ Requires:       binutils
 Requires:       tar
 # None of them are actually required for core features.
 # Perl helper scripts use them.
-%if 0%{?suse_version}
+%if 0%{?suse_version} > 1000
 Recommends:     perl(Date::Language)
 Recommends:     perl(Date::Parse)
 Recommends:     perl(LWP::UserAgent)