[plt-scheme] Questions about modules, compilation, namespaces, planet and ffi

Hi,

Well neither mzscheme nor mred are linked against libpthread on my system.
I discovered that if on the REPL I do:

(require (lib "foreign.ss"))
(define libpthread (ffi-lib "/lib/libpthread.so.0"))

mzscheme doesn't crash after loading libevas (or any library linked with
libpthread). This is a quick-fix, but works :).