GitLab

Saves space in the symbol table and speeds up linking

We want to be able to pick the RTS flavour (e.g. -threaded) when we
link the final program.

RTLD_NOW apparently causes some problems, according to previous
mailing-list discussion

 http://www.haskell.org/pipermail/cvs-ghc/2007-September/038570.html

It's now easier to add new repos anywhere in the source tree

just saves a bit of typing

rather than the first one that it finds on the PATH

Unless sparks are roots, strategies don't work at all: all the sparks
get GC'd.  We need to think about this some more.