Log message:
Really delete MzScheme, see lang/racket-textual for successor.

Log message:
Update to MzScheme 4.2.4

Changes:

Version 4.2.4, January 2010
Added scheme/flonum and scheme/fixnum
Extended scheme/unsafe/ops
Changed JIT to support unboxed local binding of known-flonum
 arguments to unsafe-fl functions
Changed JIT to inline numeric ops with more than 2 arguments
Added #:save-errno option for foreign-function types
Added module->imports and module->exports

Version 4.2.3, November 2009
Changed _pointer (in scheme/foreign) to mean a pointer that does not
 refer to GCable memory; added _gcpointer
Added scheme/vector

Log message:
Update package list as well.

Log message:
Update to MzScheme 4.2.2, changes since previous:
Added scheme/unsafe/ops
Added print-syntax-width
Added file-or-directory-identity
Inside: embedding applications should call scheme_seal_parameters
 after initializing parameter values (currently used by Planet)

Log message:
Update to MzScheme 4.2.1.  Numerous changes since previous version (360),
including support for new R6RS standard.

Log message:
Remove @dirrm entries from PLISTs

Log message:
Alexey Lebedev reports that it builds fine on amd64 ubuntu, so allow it.

Log message:
drop maintainership

Log message:
Since revision 1.50 of mk/subst.mk, the test for text files is no longer
unreliable, so re-enable it.

Log message:
add MAKE_JOBS_SAFE=no

patch from Aleksej Saushev in PR pkg/36752