initial non-compiling version of 'parallel'
progress for the 'parallel' statement
'parallel' statement: next steps
'parallel' statement almost working
progress with futures
bugfix: regionized pointers in a generic context; renamed 'Future' to 'Promise'
added 'sortoutput' option to make output deterministic for threading tests
'parallel' proves array bounds
correct code generation for tforstmt
tester works again
tdisjoint_slice2 works
pi test compiles, but crashes randomly
fixed codegen for return values
Merge branch 'new_spawn' of https://github.com/Araq/Nimrod into new_spawn
bugfix: codegen for promises
hopefully faster barrier implementation
fixed codegen for barriers
Merge branch 'new_spawn' of https://github.com/Araq/Nimrod into new_spawn
barrier more efficient
Promises are now refs