Pass -unreg for unregisterized builds.

Fix ifdef INTERPRETER code fragment.

Fix gratuitous duplication of libraries in the linker command line.

- ignore case in pragma names

- add "NOTINLINE" as a possible spelling of "NOINLINE" for the
  grammatically challenged.

Many changes needed to support loading of GHC compiled code.  The main
changes are to parser.y and interface.c to load .hi files and create
appropriate symbol table entries.  Also, interface.c has the
beginnings of and ELF loader/linker in it.

Existential constructors NEVER WORKED!  You were JUST IMAGINING IT!

Existential contexts on datatype declarations.

Use $CC -E instead of gcc.

Make the new file-slurping code work with 3.02.

Omit ugen.

When not profiling,  parse   `_scc_ "string" e'  as `(e)', not just `e'.

Rationale:  scc expressions are defined as extending as far to the
right as possible, and if we simply remove the _scc_ part the parse
looks awfully strange to the renamer which tends to fall over.

Remove ugen; we don't need it anymore.

Comment out some stuff we don't use.

oops, better export it too.

Fix bug in compat version of bracket.

suppress needless warning

Added rts_evalLazyIO

DLL install support

Small grammar correction: 'x @ Rec{..}' should parse as 'x @
(Rec{..})'.

- parse _scc_ expressions
- give a proper error on illegal characters in the lexer.

^M should be a space character.

Fix tyvars field of RuleDecls.

Don't pass strange hsp-type arguments anymore.

This commit replaces the old yacc parser with a Happy-generated one.
Notes:

	- The generated .hs file is *big*.  Best to use a recent
	  version of Happy, and even better to add the -c flag
	  to use unsafeCoerce# with ghc (versions 4.02+ please).

	- The lexer has grown all sorts of unsightly growths and
	  should be put down as soon as possible.

	- Parse errors may result in strange diagnostics.  I'm looking
	  into this.

	- HsSyn now contains a few extra constructors due to the way
	  patterns are parsed as expressions in the parser.

	- The layout rule is implemented according to the Haskell
	  report.  I found a couple of places in the libraries where
	  we previously weren't adhering to this - in particular the
	  rule about "nested contexts must be more indented than
	  outer contexts".  The rule is necessary to disambiguate
	  in the presence of empty declaration lists.

Remove illegal use of layout.

"oops"

Enable rules for simplification of SeqOp

Fix a related bug in WwLib that made it look as if the binder
in a case expression was being demanded, when it wasn't.

Make the default instance for Ord such that it suffices to define <=, as claimed

Yet more fixes to the dreaded Enum instances

Make Ix instances more inlinable

Make the Enum Integer instance deforestable

Fix a killer bug in the RULES for 'all' and 'any'
that simply made them wrong, with various obscure
consequences.

Fixes for case-of-case and let-no-escape.

semi-automatic support for indexing

Minor wibble to do with module names that contain a Z

Make the renamer so that the class ops on the LEFT HAND SIDE
of the bindings of an instance decl count as free variables
of that declaration.  E.g.

	instance Foo [a] where
	  op x  = ...
	  bop y = ...

Here, 'op' and 'bop' are now counted as free variables of
the decl.

This is vital, because the class decl for Foo might be imported,
and look like this:

	class Foo a where
	  op  :: a -> S
	  bop :: T -> a

and these might happen to be the only mentions of S and T
in the program.  Then we need to treat S and T as instance
gates for the purpose of hauling in further instance decls,
and the Right Way to do that is to announce that 'op' and
'bop' have been mentioned.

I also removed the (now obselete) rn_omit field in the
monad.

Minor improvements in error messages

Several bugfixes (from SLPJ's tree).

Remove dangling 'where'.

stg_gc_noregs should leave the return address on the stack (it's a
case alternative).