apache2 package should depend on libapr1-devel and libaprutil1-devel

[Warren Young]

I know it sounds strange, but the httpd2-config script that comes with 
Cygwin's apache2 package calls apr-1-config and apu-1-config, which live 
in the -devel packages, being pkg-config type tools.

Another solution would be to extract these *-config scripts into 
separate packages, and make them dependencies of both libapr*-devel and 
apache2.