Add a test for libreadline.{a|so}  (include/readline/readline.h
is already tested for.).

Install control-c signal handler in interpreter() after call to
initialize, since that calls startupHaskell, which trashes previous
signal settings.

Modify to avoid warning message in test log

Document no deriving for existentials

Add existential-deriving test

Initial revision

Fix REG_Su optimised code for update frames (only affects machines
with a REG_Su, such as Sparc).

This change provided by Alastair Reid is a bunch of wibbles which fix
some severe performance problems in the copy of the Pretty library
distributed with Hugs-Sept99.

The problems show up when making heavy use of hsep (eg printing large
numbers of comma separated lists which tend to run over the end of
line).  The problems manifest themselves as the infamous "control
stack overflow" and seem to be due to the generation of large
Int thunks that look something like this:

  80 - 4 - 1 - 1 - 3 - 1 - ... -1

(There may be a few +'s in there too but -'s predominate.)

Small test fixes

Report slow-entry counts in ticky-ticky

1.  rts_eval_ now returns Killed if evaluator is interrupted,
    so act accordingly.
2.  RevertCAFs is on by default.

Add prototype for interruptStgRts().

Re-instate interrupted stuff.  If the scheduler finds the interrupted
flag to be set, it calls deleteThread() on all the runnable and
blocked threads, wakes up any main thread clients that were waiting,
and then either

	(a) returns, in the UP case
	(b) waits for more work, in the SMP case.

wibble: Remove irrelevant #ifdef (DOUBLES).

Print float/double literals correctly in error messages.

grrr, back out changes that snuck in with previous commit.

Integer divMod now uses the native GMP method.  The PrimOp was already
there, it just wasn't being used.

Remove old Spix stuff, replace with shiny new support for Julian's
CacheProf stuff.  yay!

avoid those annoying -0.00 times.

oops, use the correct type

forgot type in parameter list

Adding Int8,16,32,64 into Hugs.

These changes are based on the current (Sep99 Hugs) version of Word.

The GHC parts should be unchanged.

Fix up some problems with the IN_STG_CODE macro.

A slew of SMP-related changes.

 - New locking scheme for thunks: we now check whether the thunk
   being entered is in our private allocation area, and if so
   we don't lock it.  Well, that's the upshot.  In practice it's
   a lot more fiddly than that.

 - I/O blocking is handled a bit more sanely now (but still not
   properly, methinks)

 - deadlock detection is back

 - remove old pre-SMP scheduler code

 - revamp the timing code.  We actually get reasonable-looking
   timing info for SMP programs now.

 - fix a bug in the garbage collector to do with IND_OLDGENs appearing
   on the mutable list of the old generation.

 - move BDescr() function from rts/BlockAlloc.h to includes/Block.h.

 - move struct generation and struct step into includes/StgStorage.h (sigh)

 - add UPD_IND_NOLOCK for updating with an indirection where locking
   the black hole is not required.

Test for lit-lits in patterns.

Fixes to Simon's lit-lit pattern commit

Reset standard file descriptors to blocking mode on exit.

mulIntCzh (i386_TARGET_ARCH): xor --> xorl

Debugging wibble.

This is to fix the following bugs:

    Reported by    Description
    ----------------------------------------------------------------------
    Various        cutoff value for -c option seems too low.
    Andy           weirdness with :i C if C is a zero parameter class.
    Ross Paterson  Problem with rank 2 parameters and "Showable" class.
    Jeff           Stronger static checking on instances for classes with
                   functional dependencies.

Support for negative timings in the stats file.  (I've seen times of -0.00).
If a timing is negative then set it to 0.

Deal better with lit-lit pats

basck out previous change;  Simon is working on a more correct fix

Don't allow litlits in patterns.

Make Hugs evaluator work with new register table arrangements
arising from Simon's SMP work.

Undo previous misguided commit by me

Handle potentially blocking writes (yes, I've seen one :) Or rather,
its footprint: unfortunately, the error message didn't appear because
writes to stderr were returning EAGAIN etc. etc., see accompanying
commit to writeError.c.)

Clear the non-blocking flag on stderr before trying to print an error
message.

_ccall_GC wibbles

Allow this syntax on the lhs:

	(e1 `op` e2) e3 = ...

(bug reported by Ralf Hinze).

Add a test for it.