Support for custom sitearch and vendorarch directories
|Target version:||next minor|
For FHS system, it might be beneficial to allow to specify not only custom site and vendor directories, but also architecture specific site and vendor directories. Please apply the attached patch which implements these new "--with-sitearchdir" and "--with-vendorarchdir" configuration options.
Note that similar patch was used in Fedora for ages, so it would be fine to make it available upstream.