spec: Small RPM fixes

In case anyone tries this.

spec.in

@@ -12,9 +12,8 @@ Source0:	https://dl.fedoraproject.org/pub/alt/purpleidea/__PROGRAM__/SOURCES/__P
 # graphviz should really be a "suggests", since technically it's optional
 Requires: graphviz
 
-# If go_compiler is not set to 1, there is no virtual provide. Use golang instead.
-BuildRequires:	%{?go_compiler:compiler(go-compiler)}%{!?go_compiler:golang}
-BuildRequires:	golang-googlecode-tools-stringer
+BuildRequires:	golang
+BuildRequires:	golang-x-tools-stringer
 BuildRequires:	git-core
 BuildRequires:	mercurial
 
@@ -57,7 +56,6 @@ install -m 0644 misc/example.conf %{buildroot}%{_sysconfdir}/__PROGRAM__/__PROGR
 %doc AUTHORS
 %doc COPYING
 %doc COPYRIGHT
-%doc DOCUMENTATION.md
 %doc README.md
 %doc THANKS
 %doc examples/*