more 4.02 updates.

Tiny error-message hacks

Misc tests fixes, and activate the programs directory

Import instance involving (->)... Paul Callaghan bug report

remove a couple of 'sec:'s.

Bugfix for generation resizing in the single-generation case.

Count live data properly in the single-generation case.

Updated + added Main.main regression test.

Hack around timezone problems.  Completely fail to do the right thing
in favour of getting 4.02 out of the door.

Add -fdo-case-elim to the first simplifier pass; I forget exactly why

Fix typechecker bug so that

	main :: a
	main = error "Urk"

gives a sensible error message rather than crashing the compiler

Added `timezone' config test.

Fix bug in scavenge_mutable_list that meant mutable objects sometimes
got dropped from the mutable list.

CC_DECLARE ppr bugfix

The StablePtr dataCon is now a 'known' name

H98ified

New regression test - overlapped patterns involving labelled fields.

Added two new (read.show) regression tests for derived Read&Show instances.

simplify_pat: When simplifying a RecPat to a ConPat, expand out the missing
fields with WildPats.

-fwarn-type-defaults is your friend; misc changes to avoid H98's
'default default' of Integer to kick when what we really want is Int.

Copyright police.

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

[ repeating commit, message got lost last time ]

  - Scavenge each older generation immediately after traversing its
    mutable list.

  - Make the first GC a major one: it doesn't cost much, and we get
    to garbage collection 'main' straight away.

  - Change the order of scavenging to try to minimise the size of
    the mutable lists.

[ repeating commit, message got lost last time ]

- Scavenge each older generation immediately after traversing its
  mutable list.

- Make the first GC a major one: it doesn't cost much, and we get
  to garbage collection 'main' straight away.

- Change the order of scavenging to try to minimise the size of
  the mutable lists.

Make it work.

Updates

'errors' caught by -fwarn-type-defaults

Add initial empty line to a block of errors/warnings

sigh, too hasty with dropping -monly-3-regs on Int and Word

Added oblique egcs-1.1.1 remark

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.

deriving Enum bugfixes

Track recent changes in ghc/rts so this file is still compilable.

PrelErr.hi-boot: record exports as coming from a .hi-boot file.

- don't complain if 'total memory in use' field not found in final RTS
info dump.
- add -fwarn-type-defaults to the set of -Wall warnings.

Document new -fwarn-type-defaults option.

- Decode module names before outputting the .hi file

workaround for cpp unfriendly SLIT string

a) Fix black hole bug when doing -dshow-rn-trace
   (Involved reorganising where fixity exports are dealt with
    in RnNames/RnIfaces.)

b) Arrange to apply Lint to imported unfoldings when -dcore-lint

c) Add -fwarn-type-defaults to report use of the defaulting rules for types

d) Make it so that f (error "help) --> error "help", if f is strict
   (Changes in Simplify.lhs.)