Parser didn't like "instance Foo X where {}". Does now.

wibble

fix isAlphanum/isAlphaNum problems.

A couple of Int type signatures to avoid H98 Integer defaulting.

H98 changes for non-cygwin targets.

Remove 'const' modifier from static closure declarations.  Static
closures are meant to live in R/W data space.

Minor syntactic h98 updates

Recognise "-- !!!" (as well as "--!!!") as the start of an interesting
comment. The latter isn't liked by a Haskell98 tokeniser, hence the change.

Removed debugging code that accidentally was left behind.

lexLitChar: '\DEL' wasn't being lexed properly

Fixes to support .hi unfoldings containing "_ccall_ dynamic"s

Tweaked to cope with Haskell98's change to what constitutes a -- comment

added isEmptyMVarZh macro

Forgot to commit this before Christmas...on Win32 platforms use
VirtualAlloc() instead CreateFileMapping()&friends to ask for
mega-blocks from the OS. Windows 95-friendlier.

Haskell 98 related changes + the addition of the MVar primop,

   isEmptyMVar :: MVar a -> IO Bool
     -- use with care.

-syslib posix gets the Haskell 98 treatment

-syslib misc meets Haskell 98.

* Misc changes to reflect that we're now speaking Haskell 98.
* Augmented IOExts export list with

		unsafeIOToST	   :: IO a   -> ST s a
		stToIO	           :: ST s a -> IO a

Changes to make the Prelude comply with Haskell 98.

I claim that this completes GHC's implementation of Haskell 98 (at
least feature-wise, but there's bound to be some bugs lurking..)

Minor Makefile mods.

Assorted minor Haskell 98 changes:

  * Maximal munch rule for "--" comments
  * _ as lower-case letter, "_" is a reserved id. Prefixing unused
    variable names in patterns with '_' causes the renamer not to
    report such names as being unused.
  * allow empty decls
  * comprehensions are now list comprehensions, not monadic.
  * use Monad.fail to signal pattern matching errors within
    do expressions.
  * remove record punning.
  * empty contexts are now legal  (go wild!)
  * allow records with no fields
  * allow newtypes with a labelled field
  * default default is now (Integer, Double)
  * turn off defaulting mechanism for args & res to a _ccall_.
  * allow LHSs of the form  (a -.- b) x = ...
  * Main.main can now have type (IO a)
  * nuked Void (and its use in the compiler sources.)
  * deriving machinery for Enum now also generate 'succ' and 'pred'
    method bindings.

x86: only add -fomit-frame-pointer when compiling .hc files.  It gets
in the way of debugging for normal .c files.

- compile Happy with -O by default.

Arrange for Makefile dependencies to be generated on misc
parser/ helper code.

Remove a couple of non-existent closure types.

Added indexFS,

   indexFS :: FastString -> Int -> Char

Oops, stack check in PAP_entry was *completely* wrong.  Time for a
stack check audit.

- fix stack check in PAP_entry.

Changed expected output to match new reality.

When -DDEBUG, in BYTE_ARR_CTS, allow GET_INFO(a) to be
&MUT_ARR_WORDS_info as well as &ARR_WORDS_info.

- check failed_to_evac in scavenge_static.  We might have a static
  indirection (i.e. a CAF) that we can't evacuate to the oldest generation,
  so we have to put it back on the old generation mutable list.

With this change, a bootstrapped compiler now compiles the libraries
successfully.

- Don't forget to set failed_to_evac when evacuating a THUNK_SELECTOR
- Fix GC counting

Changed expected output to reflect new reality.

Added a generational garbage collector.

The collector is reliable but fairly untuned as yet.  It works with an
arbitrary number of generations: use +RTS -G<gens> to change the
number of generations used (default 2).

Stats: +RTS -Sstderr is quite useful, but to really see what's going
on compile the RTS with -DDEBUG and use +RTS -D32.

ARR_PTRS removed - it wasn't used anywhere.

Sanity checking improved:
	- free blocks are now spammed when sanity checking is turned on
	- a check for leaking blocks is performed after each GC.

Code generated by implementTagToCon() gives a useful error message
in case of invalid arguments.

testing

Z-encodings for '/' and '.' were both 'Zd'.  Change '.' to 'Zs'.

Added check target.

Made FILE_OBJECT be defined for -D__HUGS__.
Changed .dll file refs to .so for -D__HUGS__.

Created a Makefile for fptools/ghc/interpreter.