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Copyright police.

Remove MUT_ARR_WORDS.  I'm not sure why we had it in the first place.

don't include structs that are known to be empty within StgInfoTable and
StgHeader. Shouldn't be a problem - but egcs-1.1.1 doesn't handle them
correctly.

- Add ticky counter for total bytes copied during GC.
- Separate mutable list into two lists, a "mut once" list for
  old generation indirections and MUT_CONS cells, and a "mut many"
  list for mutable arrays, TSOs etc.  Objects on the "mut once" list
  will be eagerly promoted.

Remove warnings in deRefWeakzh.

- Add finalise#
- Add mkWeakNoFinaliser
- Move deRefWeak# from an out-of-line primop to an inline one.

zh --> Zh (for genSymZh and resetGenSymZh)

Finally!  This commits the ongoing saga of Simon's hygiene sweep

FUNCTIONALITY
~~~~~~~~~~~~~
a) The 'unused variable' warnings from the renamer work.  
b) Better error messages here and there, esp type checker
c) Fixities for Haskell 98 (maybe I'd done that before)
d) Lazy reporting of name clashes for Haskell 98 (ditto)

HYGIENE
~~~~~~~
a) type OccName has its own module.  OccNames are represented
   by a single FastString, not three as in the last round.  This
   string is held in Z-encoded form; a decoding function decodes
   for printing in user error messages.  There's a nice tight
   encoding for (,,,,,,,,,,,,,,,,,,,,,,,,,,,,,)

b) type Module is a proper ADT, in module OccName

c) type RdrName is a proper ADT, in its own module

d) type Name has a new, somwhat tidier, representation

e) much grunting in the renamer to get Provenances right.
   This makes error messages look better (no spurious qualifiers)

- Add specialised closure types (CONSTR_p_n, THUNK_p_n, FUN_p_n)
- Add -T<n> RTS flag to specify the number of steps in younger generations.

add missing file.

- Add Stable Names

- Stable pointers and stable names are now both provided by the
  "Stable" module in ghc/lib/exts.  Documentation is updated, and Foriegn
  still exports the stable pointer operations for backwards compatibility.

Added comment next to the I*_ macros to explain why having them
expand to use 'static' instead of 'extern' is a Really Bad Idea.

integerToInt64Zh: didn't handle negative integers particularly well

Resurrect ticky-ticky profiling.  Not quite polished yet, but it
compiles and produces some reasonable-looking stats.

Remove debugging code from freeStablePtr.

Completed support for GAMMA_VAR.

- BLACKHOLE_BQ is a mutable object, because new threads get added to
  its blocking_queue field.  Hence add a mut_link field and treat it
  as mutable in the garbage collector.

- Change StgBlackHole to StgBlockingQueue while I'm at it.

- Optimise evacuation of black holes: don't copy the padding
  words, just skip over them.

- Several garbage collection fixes.

- Improve sanity checking: now the older generations are fully checked
  at each GC.

Added protos for freeHaskellFunctionPtr() and createAdjustor()
(suggestions as to what might be a more appropriate home for these
are welcome.)

Added debugging code to freeStablePtr macro

long long support: cleared up Real vs. virtual regs. confusion (I hope!)

- Add new object BLACKHOLE_BQ: now a BLACKHOLE is defined as having an
  empty blocking queue, and the first time a thread blocks on a BLACKHOLE
  it is changed into a BLACKHOLE_BQ.

- Remove UPD_INPLACE1 and replace it with UPD_IND in the two places it
  was used.  UPD_INPLACE1 wouldn't have worked in a generational setting.

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

added isEmptyMVarZh macro

Remove a couple of non-existent closure types.

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

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.

testing

bring in correct version

oops, wrong version of gmp.h

Move 4.01 onto the main trunk.

StablePtr primops added

[Semi-experimental]
ENTER_CC_PAP: tick the entry count of a PAP's CC when entering it.

Added seqZh comment on why it shouldn't be used on partially applied values

Protect long long bits with HAVE_LONG_LONG

Rearrange (commutative) #ifdefs to ensure that _INFO_MARKING is
defined when we come to do 'make clean all' in
ghc/runtime, it completes without error.

Int64# and Word64# primops and prototypes, removed shiftRAZh

If supported/needed, define LngRegs in register table

For completeness, define CALLE{E,R}_SAVES_* for LongRegs

define MAX_LONG_REG

{Save,Restore}AllStgRegs: save and restore LngRegs