* module/ice-9/Makefile.am: Replace annotate.scm with expand-support.scm.
* module/ice-9/annotate.scm: Removed; subsumed into expand-support.scm.
* module/ice-9/compile-psyntax.scm: Strip out expansion structures before
writing to disk.
* module/ice-9/expand-support.scm: New file. Provides annotation support,
and other compound data types for use by the expander. Currently the
only one that is used is the toplevel reference, <module-ref>, but we
will record lexicals this way soon.
* module/ice-9/psyntax-pp.scm: Regenerate.
* module/ice-9/psyntax.scm (build-global-reference)
(build-global-assignment): Instead of expanding out global references
as symbols, expand them as <module-ref> structures, with space to
record the module that they should be scoped against. This is in
anticipation of us actually threading the module info through the
syntax transformation, so that we can get hygiene with respect to
modules.
* module/ice-9/syncase.scm: Replace eval-when. Since sc-expand will give
us something that isn't Scheme because we put the <module-ref>
structures in it, strip that info whenever we actually do need scheme.
* module/language/scheme/compile-ghil.scm (lookup-transformer): Strip
expansion structures here too.
* module/language/scheme/expand.scm (language): Swap annotate for
expand-support. But this file will die soon, I think.
Moved ice-9/ and oop/ under module/, with the idea being that we have
only scheme under module/. Adjusted configure.in and Makefile.am
appropriately. Put oop/ at the end of the compilation order.
