Hello!

In current state GUILE_SITE do not respect $prefix and hard to use in
local installs of Guile modules. This patch tries to improve this
situation by introducing GUILE_SITE_LOCAL version, than respects
$prefix.

Opinions, better solutions, critics?

PS. Please, keep me in CC.

--
Best regards, Dmitry Bogatov <KAction@gnu.org>,
Free Software supporter, esperantisto and netiquette guardian.
GPG: 54B7F00D