The generic to/from methods for derivable type classes should only
be generated for types in the current group, rather than all the
in-scope tycons.  Otherwise they get generated multiple times in
a Template-Haskell situation.

Add some I/O error checking so that an error when writing the output
file will correctly result in a non-zero exit code.

Currently, if you try to compile a literate Haskell file and /tmp is
full, unlit will write an empty file and exit successfully, leading to
confusing behaviour.

merge rev. 1.9.6.2 to the HEAD (remove comment about multiple Main modules)

merge rev. 1.9.6.1 to the HEAD (add overflown relocs bug)

More RTLD_* symbols are now available on OpenBSD.
This does not mean that ghci works yet, though.

Synched with hugs98 repository again (X_FLAGS handling this time)

Merge to STABLE.

Synched with latest changes in hugs98 repository (finding "find" plus
#ifdef massage). Some common autoconf macro directory would be really
handy: ToDo...

expandEnvVars.expandStrings: flatten the expanded strings so as to
permit a substitution to expand into multiple elements of the final
list.

merge to stable.

Maintain order of 'objs' when adding them to v_Ld_inputs.
Fixes ghc-6.x linking bug when .a's are given explicitly
on the command-line.

merge to stable.

tidy up siginterrupt() use

check for siginterrupt()

prog_name: use '\' as separator with mingw builds.

merge to stable

Report max heap in Mbytes as well.

merge to stable

win32: in case of a heap overflow, report this via heapOverflow(), and not
       by panic'ing.

merge to stable.

Wibble to TH -> HsSyn conversion

Trim exports

Pretty-printing wibble; fixes many tests

This commit does a long-overdue tidy-up

* Remove PprType (gets rid of one more bunch of hi-boot files)

* Put pretty-printing for types in TypeRep

* Make a specialised pretty-printer for Types, rather than
  converting to IfaceTypes and printing those

1.  When desugaring a [d| ... |], do not gensym the method names of
    an instance declaration, else we get very confused!

2.  We don't need to make fresh Names in DsMeta.mkGenSym, because
    the existing Name will do, I believe.  We'll do the genSym when
    we *run* the splice.  (This stuff makes my head hurt.)

    Assuming this is so, we can simplify the mkGenSym stuff still more.

Wibble

Improve panic msg

Formatting only

Updating TH; not finished

Remove redundant param from allUses

Tiny code simplification (allUses)

Add info about compiling the Main module

Fix a bad consequence of the new story for the generic toT/fromT functions
derived from data types declarations. The problem was that they were being
generated and then discarded by the simplifier, because there was nothing
keeping them alive.

This commit
  * Adds a field tcg_keep to the TcGblEnv, which records things
    to be kept alive;

  * Makes the desugarer pin the keep-alive flag on each binding
    (it's actually a call to setIdLocalExported)

  * Removes that job from updateBinders in SimplCore


It's somewhat tiresome, but not really difficult.

Put to and from the correct way round

Print info about orphan rules and instances

Squish bogus warning

don't recognise (| or (# if followed by a symbol character, e.g. (||)

good for STABLE, I hope

Declaration splices should shadow the top-level environment

Add support for .bss (zero-initialized) sections on Mac OS X

Merge to stable.

Wibbles about argument variance

Fix to super-class loop avoidance code; commented in the file; tcrun020 tests

Improve duplicate-instance reporting; swap inst-env param order

Comments only

Always qualify in defaultErrStyle

Improve error message when iface decl not found

Eliminate bogus warning