Added missing build requirements.

protobuf-c.spec

@@ -7,8 +7,10 @@ License:        BSD
 URL:            https://github.com/%{name}/%{name}
 Source0:        %{url}/releases/download/v%{version}/%{name}-%{version}.tar.gz
 
-BuildRequires:  make
+BuildRequires:  autoconf
+BuildRequires:  automake
 BuildRequires:  gcc-c++
+BuildRequires:  make
 BuildRequires:  pkgconfig(protobuf)
 
 %description
@@ -49,8 +51,8 @@ make check
 find %{buildroot} -type f -name '*.la' -delete
 
 %files
-%doc TODO ChangeLog README.md
 %license LICENSE
+%doc ChangeLog README.md TODO
 %{_libdir}/lib%{name}.so.*
 
 %files compiler