Update version number.

Zap irrelevant ifdefs.

cgAlts(): Don't test constructor tag if the scrutinee is known
to come from a product (single-constructor) type.

When generating wrapper code for primops/callouts with return type
IO (), don't allocate a unit to return.  Instead, return the address
of the unit closure.

Nuke DEBUG_EXTRA once and for all, and make Hugs use the same stack
tags as GHC.

Convert some DEBUG_EXTRAs into DEBUGs.

Include path wibbles.

Enforce multiple reader, single writer semantics for Handles.

Reduce the number of orphan-instance modules.  There are a few left,
but these can't be removed without significant reorganisation due to
recursive dependencies.

evalExp(): print a better message if Deadlock is returned

Implement Random.setStdGen and Random.getStdGen for Hugs.

add libexecdir to SCRIPT_SUBST_VARS.

Add comment about Hugs (non-)compliance.

Implement CPUTime.getCPUTime, CPUTime.cpuTimePrecision.

Implement System.system, System.exitWith for Hugs.

eqForeignObj can be an unsafe ccall.

remove some irrelevant code

Set GHC_INTERPRETER_DIR, and add target rtsclean in interpreter/Makefile.

Implement more of IO std library.  Buffering settings,
seekery and some error-handling stuff is still missing, but the
rest is done.

Duh.  Reinstate type variable for state token in Ref type.
Also rename to STRef since that's GHC's name for it.

General cleanup of Makefile for STG Hugs.
library building has been moved to its own directory.

Adding Makefile for Hugs lib directory.

Make Ref only be parameterised by the type of the mutable value,
rather than by that *and* the type of the state token.

Initialize the cost-centre in the header of a new TSO.

Removed fix for -ve MUT times,  Simon has put fix in rts/Stats.c,
which is where it should be.

Export Ref, newRef, readRef, writeRef from the Prelude.

Minor bugfixes for concurrency support in Hugs.

Evaluator.c: correctly handle case of entering a black hole.
Prelude.hs:  better exception catching in forkIO and primRunIO
GC.c:        (revert_dead_CAFs): don't ASSERT(0) on a dead CAF
             (I don't know why this assert was there)

In hugs, implement ThreadId(..), instance Eq/Ord ThreadId,
and forkIO.  Add deleteAllThreads() to scheduler so Hugs can
clean up after evaluation.

A version of the Prelude with some extra (primitive) functions
exported for use by various system libraries.

Merging in the various changes between Sep99 Hugs and Nov99 Hugs.

cacheprof-related nano-wibble

Remove unused FiniteSet stuff.

Added basic support for MVars: data MVar, and newMVar, putMVar and
getMVar.

sync output

sync output

Couple of fixes for -accept-output.

Pull in _regPrelude if we're profiling.

Fix queue corruption bug in unblocking of threads blocked on I/O.

Set version to 991115, as this seems a stable point.

Wibbles to make get a fully-optimised build to work.  (We've been
building debug versions for a v. long time now).