wscript: Populate RPATH if it's set in Libs
wscript: Populate RPATH if it's set in Libs

 NetBSD needs this to find libraries in `/usr/pkg/lib`.

Signed-off-by: Mohammad Alsaleh <6c225a8dcf0f3ea8ab31a8a88dea0c937d544fc7@gmail.com>

saldl/saldl,saldl/saldl,saldl/saldl