drop requirements on cmake, pkgconfig

Instead, own the directories for the files augmenting these packages.

https://fedoraproject.org/wiki/Packaging:Guidelines#The_directory_is_owned_by_a_package_which_is_not_required_for_your_package_to_function

uid_wrapper.spec

@@ -1,6 +1,6 @@
 Name:           uid_wrapper
 Version:        1.2.1
-Release:        2%{?dist}
+Release:        3%{?dist}
 
 Summary:        A wrapper for privilege separation
 License:        GPLv3+
@@ -11,9 +11,6 @@ Source0:        https://ftp.samba.org/pub/cwrap/%{name}-%{version}.tar.gz
 BuildRequires:  cmake
 BuildRequires:  libcmocka-devel
 
-Requires:       cmake
-Requires:       pkgconfig
-
 %description
 Some projects like a file server need privilege separation to be able to switch
 to the connection user and do file operations. uid_wrapper convincingly lies
@@ -60,13 +57,19 @@ popd
 %files
 %doc AUTHORS README ChangeLog COPYING
 %{_libdir}/libuid_wrapper.so*
+%dir %{_libdir}/cmake
 %dir %{_libdir}/cmake/uid_wrapper
 %{_libdir}/cmake/uid_wrapper/uid_wrapper-config-version.cmake
 %{_libdir}/cmake/uid_wrapper/uid_wrapper-config.cmake
+%dir %{_libdir}/pkgconfig
 %{_libdir}/pkgconfig/uid_wrapper.pc
 %{_mandir}/man1/uid_wrapper.1*
 
 %changelog
+* Tue Jun 27 2017 Nils Philippsen <nils@redhat.com> - 1.2.1-3
+- drop requirements on cmake, pkgconfig and rather own the directories for the
+  files augmenting these packages
+
 * Sat Feb 11 2017 Fedora Release Engineering <releng@fedoraproject.org> - 1.2.1-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_26_Mass_Rebuild