Parallel Haskell changes(hwloidl)

Don't use ForeignObjs with Parallel Haskell; renamed finaliser for standard descriptors (now freeStdFile)

new prims made visible: parAtAbs#, parAtRel# and reallyUnsafePtrEquality#

Avoid exposing ForeignObjs when compiling Parallel Haskell

unionBy: remove duplicates in second argument (required for the following invariant to hold: if the first list argument contain no duplicates, then the result of applying unionBy doesn't either)

Improved glossary/terminology at start - added unpointed and unboxed.
Created a section at start to describe the source language.  At the moment,
 all it contains is a description of unboxed tuple constructors.
Replaced erroneous uses of "closure" with "heap object".  According to
 the glossary, closures are enterable - things like stack objects
 are not enterable so they can't be closures.
Clarified section 2.7 (heap and stack checks): why should we not move Hp
 during heap check?
Added comment that I don't believe in the notion of fixed headers.

fix for overloading-related space leak (typecheck/should_run/tcrun002)

fix reversed arguments to unpackNBytesST in getCurrentDirectory.

Comment on let-to-case added (simplNonRec)

Updated to reflect MachRegs.Addr to MachRegs.Address renaming

Updated to reflect MachRegs.Addr to MachRegs.Address renaming; various x86 bug fixes

Updated to reflect that MachRegs.Addr has been renamed to Address to avoid needless conflict with GlaExts

Updated to reflect MachRegs.Addr to MachRegs.Address renaming; x86: Hp and HpLim are located relative to BaseReg, not StorageMgrInfo

Updated to reflect MachRegs.Addr to MachRegs.Address renaming; x86 shift instructions need special treatment to get at %cl; added DEBUG msg if x86 MOV %r,%r instruction generated

Updated to reflect MachRegs.Addr to MachRegs.Address renaming; fixed incorrect handling of x86 shift instructions (second operand can be *both* immediate and register(ecx))

import MachRegs unconditionally

Added flag opt_UnfoldingKeenessFactor; new (internal) function: lookup_def_float

Default for uNFOLDING_KEENESS_FACTOR (2.0) added; uNFOLDING_OVERRIDE_THRESHOLD removed

Bargain multiplier opt_UnfoldingKeenessFactor added to discount computation

Removed use of opt_CompilingGhcInternals

Drop CoreUnfold.mkUnfolding import

Added comment on special parser handling of non-qualified gtycons

Added type signatures

Drop use of opt_CompilingGhcInternals

Refrain from doing let-to-case conversion on binders with RHS in whnf

Drop use of opt_CompilingGhcInternals

Latest batch of changes.  Merge SRT and Tag fields in the info table,
now that there isn't a bytecode pointer there.

first cut at header files for new RTS

remove OmitDefaultInstanceMethods (unused).

Remove section about -fshow-pragma-name-errs.  This option is
unsupported, and unnecessary, since GHC can always find the
information it needs.

Remove crufty options.

mangler fix.

protect $$s for bash.

fix a bunch of out-of-date things, plus apply some patches for broken
\indexes and \items from Sven Panne.

add a few more index entries.

knock the section on warnings into shape.

add opt_WarnMissingMethods.

oops, correct a comment.

move -fwarn-incomplete-patterns into -W (it's not as likely to
indicate an error as -fwarn-overlapping-patterns), and add
-fwarn-unused-names to -W in case it gets implemented one day.

polymorphic recursion/space leak test