Use %make_install instead of DESTDIR=%{buildroot}
Taking into account the following lines from fedora guidelines for creating
an RPM package[1]:
"Ideally you should use %make_install which is equivalent to
DESTDIR=%{buildroot} if the program supports it, as it redirects
file installations to the specified directory and is exactly
what we want to happen during the %install section."
[1] https://fedoraproject.org/wiki/How_to_create_an_RPM_package#.25install_section
Signed-off-by: Anoop C S <anoopcs@redhat.com>