zap spurious semicolon wibble

Fix a Real Bug(TM) in the new code for detecting dead threads: we
weren't taking into account the case when a ThreadRelocated is found
on the all_threads list.

MERGE 4.07

* Fix records with polymorphic fields (broken by previous 'fix')
  As a tidy-up I also put a TyCon into a FieldLabel

* Fix a glitch with the result-type-sig change

Add tests for result type sigs

Fix bug in diet_hep_initialise to do with argc/argv handling.

*** MERGE WITH 4.07 (once I've checked it works) ***

* Fix result type signatures.  Note that a consequential change is that
  an ordinary binding with a variable on the left
	f = e
  is now treated as a FunMonoBind, not a PatMonoBind.  This makes
  a few things a bit simpler (eg rnMethodBinds)

* Fix warnings for unused imports.  This meant moving where provenances
  are improved in RnNames.  Move mkExportAvails from RnEnv to RnNames.

* Print module names right (small change in Module.lhs and Rename.lhs)

* Remove a few unused bindings
  
* Add a little hack to let us print info about join points that turn
  out not to be let-no-escaped.  The idea is to call them "$j" and report
  any such variables that are not let-no-escaped.

* Some small things aiming towards -ddump-types (harmless but incomplete)

zu => _ (i.e. sync name decoding with OccName :-)

Synch encoding, decoding, and comments.

Re-instate foreign label and foreign export dynamic support in the NCG
(which both end up emitting a CLitLit into the abstract C) using a new
mkForeignLabel interface to CLabel.

This won't work if the foreign label is in a different DLL yet, but
Julian is on the case.

Z-encode underscores as "zu" (the previous owner of "zu", namely '^',
has been moved to "zc").

Improved NCG note.
Pls mrg

Add test for record selector functions where the field has a
polymorphic type.

Add -fwarn-hi-shadowing to the default set of warnings.

Complain about unrecognised warning options.

Batch finalizers on a per-GC basis.  That is, after a GC a single
thread is created to run the pending finalizers, rather than creating
a thread for each finalizer.

This is almost as fast as having a global thread to run finalizers,
but doesn't require any global state or special treatment by the
scheduler.

Don't use a worker Id for the internal ccall worker; generate a new
syslocal instead.  This is to avoid a clash in the case where a real
worker is generated later on.

be more conservative about inlining PrimOp Ids.

Please merge, of course ;-)  A couple of sentences about implicit parameters
for the release notes.  You might want to double-check my sgml, which I
do not speak fluently.

*** NO NEED TO MERGE WITH 4.07, BUT POSSIBLE ***

Warn about completely unused imported modules (when -fwarn-unused-imports)

*** MERGE WITH 4.07 ***

Correct types of selectors for records with polymorphic fields.
	    (Bug reported by Martin Kowalczyk.)

New member of the family. Look out for .redhat, .mandrake, .beos, .w95,...
coming soon.

Improved DocBook instructions and added a special section for Windows.

Added BNW of Installing It Yourself to DocBook docs.
Added new world of pattern guards to Glasgow Exts.

Fix sparc breakage caused by recent (DLLery) NCG hackery.  :-)

Make the _ret symbols static; there's no need to have these exported.

Fix type casts w/ CIndex assignments.  Should eliminate some warnings
in via-C compilations.

* A shell-classic: Inserted space before ] (the lexical syntax of
  shells is always resource of miracles...)

* Made searching for a catalog a little bit more cunning: If
  SGML_CATALOG_FILES is not set, try FPTOOLS_CATALOG_FILE, then
  /usr/share/sgml/CATALOG.docbkdsl, the SuSE-Linux default, don't know
  about Red Hat, Debian, etc.  This way "make dvi html pdf ps rtf"
  works out of the box, at least for me. :-)

Add parsec subdir.

'-#include <foo.h>' gobbled the following option. Fixed.

Teach the NCG about the dereferencing and naming conventions to be
used when compiling for a DLLised world.  Some cleanups on the way
too.  The scheme is that

* All CLabels which are in different DLLs from the current module
  will, via the renamer, already be such that labelDynamic returns
  True for them.

* Redo the StixPrim/StixMacro stuff so that all references to symbols
  in the RTS are via CLabels.  That means that the usual labelDynamic
  story can be used.

* When a label is printed in PprMach, labelDynamic is consulted, to
  generate the __imp_ prefix if necessary.

* In MachCode.stmt2Instrs, selectively ask derefDLL to walk trees
  before code generation and insert deferencing code around other-DLL
  symbols.

* When generating Stix for SRTs, add 1 to other-DLL refs.

* When generating static closures, insert a zero word before
  the _closure label.

New version of hGetLine that is roughly 4 times faster than the
original, and is tail-recursive to boot.

I'm not entirely happy with the code, but it needs to get some testing.

Add addrOf_ErrorHdrHook prototype

Make stackOverflow prototype available Haskell compilation

cosmetic only

Remove -noC, add -package concurrent to simpl006_HC_OPTS.

Upd_frame ==> upd_frame

$(SGML_DOC) can only support one document, so build the Build System
Guide by default.

doc-building fix.

Defer ambiguity test for class members, so that the test is done *after*
we know the (extended) functional dependencies (this is a patch that was
mostly carried over from hugs98, but a few lines were out of place).

Unbreak util package dependencies for non-M$ platforms