Bob Nystrom b3f556adba Move globals out of VM and into a Module struct. ...

Functions store a reference to the module where they were
defined and load "module" variables from there.

Right now there's only one "main" module, but this is a step
in the right direction. Perf is down, though. :(

binary_trees - wren            ..........  3026  0.33s   88.28% relative to baseline
delta_blue - wren              ..........  7248  0.14s   94.32% relative to baseline
fib - wren                     ..........  2414  0.41s   88.08% relative to baseline
for - wren                     ..........  6753  0.15s   78.79% relative to baseline
method_call - wren             ..........  6624  0.15s  100.03% relative to baseline

2015-01-26 07:45:21 -08:00

..

wren.h

Move globals out of VM and into a Module struct.

2015-01-26 07:45:21 -08:00