branch scratch/lexspaces created (now e2f183c)

[Andrea Corallo]

akrl pushed a change to branch scratch/lexspaces.

        at  e2f183c   Shallow setters by default are not a good idea

This branch includes the following new commits:

       new  2d1e916   Add lexspaces.c
       new  67e28d9   Adding binding pseudovector
       new  09821e3   Store symbol value into the binding
       new  64e442b   Add SYMBOL_FUNCTION accessor function
       new  02d8ef2   Move symbol value into separate binding
       new  3a57250   Add lexspace-make-from
       new  295ac3d   Make in-lexspace do something
       new  7fecbf5   Add lexspace redirection
       new  73363e9   Store lexspace in closures
       new  610552d   Add SYMBOL_FUNC_LEXSPACE
       new  c578c72   Add function lexspace contex mechanism
       new  b46c504   Add lexspace-import-symbol
       new  9091913   Rename lexspace-make-from -> lexspace-make
       new  04ac507   Remove unnecessary assertion
       new  00108a5   Fix sweep_symbols
       new  0b0098a   Rename in-lexspace -> lexspace-in
       new  e2f183c   Shallow setters by default are not a good idea