Switch module-internal calls (i.e. all user code) to fastcall. Still returning via explicit outptr. Activate glue works by accident.

Move phi-node generation into a helper that measures the liveness of each incoming edge. Factorial test now succeeds.

rustc: Add an annotation to function and type items so that the typechecker can store types with them

Teach rustc about const tag value, begin work on trans_copy_ty, make uint's to_str routine less clever and thereby resist overflow.

rustboot: If something that wasn't a type was found where a type was expected, report where the error was

The rustboot compiler expects 'for each (type v in ...)' like 'for',
rather than 'for each (type v = ...)' as given in the documentation.

This will at least update the version string on the title page
when the book source changes. It may not be entirely accurate
since rust.texi may have uncommitted changes. But previously,
it was basically only ever updated on the first build or after
'make clean'.