make conditional forward-looking

Signed-off-by: Igor Gnatenko <ignatenko@redhat.com>

exiv2.spec

@@ -53,10 +53,10 @@ Requires: %{name}-libs%{?_isa} = %{version}-%{release}
 %package libs
 Summary: Exif and Iptc metadata manipulation library
 # not strictly required, but convenient and expected
-%if 0%{?fedora} > 25
-Recommends: %{name} = %{version}-%{release}
-%else
+%if 0%{?rhel} && 0%{?rhel} <= 7
 Requires: %{name} = %{version}-%{release}
+%else
+Recommends: %{name} = %{version}-%{release}
 %endif
 %description libs
 A C++ library to access image metadata, supporting full read and write access