Spec file cleanups and build fix
    
    Add BuildRequires: perl-FileHandle to fix make check
    Add BuildRequres: gcc [1]
    make_build [2] and make_install [3]
    
    [1] https://docs.fedoraproject.org/en-US/packaging-guidelines/C_and_C++/#_buildrequires_and_requires
    [2] https://docs.fedoraproject.org/en-US/packaging-guidelines/#_parallel_make
    [3] https://docs.fedoraproject.org/en-US/packaging-guidelines/#_why_the_makeinstall_macro_should_not_be_used