I have hacked the following files to accomodate my new top-level.  Most
changes are to allow non-noisy file and package loading, which is not
acceptable for scripts.
    -Olin
     6/95

env/load-package.scm
    really-ensure-loaded
    	New proc, has noise option.

bcomp/undefined.scm
    really-noting-undefined-variables
    	New proc, has noise option.

bcomp/scan.scm
    really-scan-structures
    really-scan-file
    really-scan-package
    	New procs, have noise option.
    
rts/eval.scm
    really-eval-scanned-forms
    	New proc, has noise option.
    N.B.: While there is another implementation of EVAL-SCANNED-FORMS
    (in debug/mini-eval), I didn't bother to define REALLY-E-S-F over
    there as well.
    
env/build.scm
    STAND-ALONE-RESUMER now uses ERROR-OUTPUT-PORT 
    for default error reporting, not CURRENT-OUTPUT-PORT.


more-packages.scm
    - Had to add ports to BUILD's open clause, so it could get at 
      ERROR-OUTPUT-PORTS
    - Added a structure BUILD-INTERNALS exporting SIMPLE-CONDITION-HANDLER.
      This is for the top-levels made by the scsh heap dumpers (as a 
      workaround for S48 error-output-port lossage).
      Also must add BUILD-INTERNALS to
      MORE-STRUCTURES-INTERFACE at end of file so it'll be kept around.

more-interfaces.scm
    Added USER-ENVIRONMENT to package-commands-internal-interface.
    My top-level needs it.

build-usual-image
    Changed to fire up vm as 
    	vm -o vm -i initial.image batch
    not
    	vm -i initial.image -a batch
    The nature of Unix args and the recursive-machine structure
    of arglists means that -i <image> *must* terminate vm arg scanning.
    So the -a is superfluous.

command.scm
    with-new-session, with-user-context
    	New procedures, separate the idea of "logging in" user --
    	establishing context for command processor -- from actually
    	starting up the command processor. The old START-COMMAND-PROCESSOR
    	folded these two together, so you can't establish context and
    	then run your own thunk. (You want to do this if your top-level
        thunk might later hit a breakpoint, for instance.)
    These are also exported in whatever the right package is.

initial-packages.scm
    Added really-ensure-loaded to ENSURES-LOADED package.

interfaces.scm
    Added really-{scan-structures,noting-undefined-variables,
    	    	  eval-scanned-forms} to the interfaces containing the
    non-really variants.
