error.h -> stgerror.h

error.h --> stgerror.h

This commit adds the new RTS option `-xc', which prints the current
cost-centre stack to stderr whenever an exception is raised.  This is
intended to be a debugging tool, to help trace those "Prelude.head:
empty list" errors that are so frustrating to find.

`-xc' is only available for programs compiled with -prof, and you
probably want -auto as well to get useful information.

This is currently experimental; it would be better if it only
displayed the info for *uncaught* exceptions, but this is harder to
implement.

This commit also makes an OFTEL-inspired extension to the RTS option
space.  Since we've almost run out of options, `-x' is now reserved
for `extended' options.  `-xc' is the first of these, but that leaves
'-x[0-9A-Zabd-wyz]' still to be used!  The prefix `-xx' is reserved
for future extension.

GHC bits for new library organisation.

rename error.h to stgerror.h

Rename error.h to stgerror.h

slight cleanup

Pass flag -ltermcap as link option for test -lreadline.

Incremental cleanups & improvements to the I/O subsystem

- Initial fix for problems caused by partial writes
  to non-blocking file descriptors.  To see this bug,
  run ghc/tests/programs/life_space_leak through a pipe.

- remove FILEOBJ_FLUSH, it allegedly has the same meaning
  as FILEOBJ_WRITE.  This fixes a buf in openFd: it erroneously didn't
  set FILEOBJ_FLUSH on writeable file descriptors.

- some ANSIfication

import wibble for hugs

Remove debugging printf in findQualifier().

HUGS_VERSION ++

Change STDCALL to STDKALL to avoid conflict with a header file.

Simon's driver changes (should have committed these a while back)

* Add -no-rules to first simplifier pass

* Move CSE pass

Missing dollar on USER_WAY_NAMES and OPTS

Add a comment

Express sequence in terms of foldr

Better error message when trying to derive classes for
existentially-quantified data constructors.

And a general slight tidy up in TcDeriv

Slight wibble on polytype syntax, going in the direction of allowing
for-alls in more places.  This one lets you say
	forall a. forall b. a->b

Report decent error for top-level defn of a qualified name

Add documentation on pattern guards

Don't guess where the installation directory is.  Instead,
read it from the STGHUGSDIR env var at startup.

Disable debug printing in setDefaultLibDir.

Add clean target, and change hugslib to all.

Fix bug in threadDelay, where the delay ticks could end up negative.

Fixing setDefaultLibDir to work with relative use of hugs binary.

Adding method for packaging up binary distribution of Hugs.

wibble

- remove -dcore-lint
- add Happy-generated files to MAINTAINER_CLEAN
- replace $(GHC_DRIVER_DIR)/ghc with $(GHC)

Fixes to allow compilation under cygwin and Win32.

Bind namePmFromInteger, namePmSubtract, namePmLe to stuff in Prelude
so that n+k patterns work.

Fixing incorrect definition of BlockBuffering in Hugs.

Changing the top level evaluator so it runs things
of type IO a, not just IO <monomorphic-thing>.

wibble

ANSIfication

oops, committed wrong file

ANSIfication

Use %Z instead of %z for timezone (%z is GNU extension to strftime)

failure to commit important files is a jumping-out-of-the-window offence

Updating dll export function list to include
new functions in nHandle.c