Cut'n'paste the latest version of rawSystem, not the horrible old
past-its-sell-by-date version I had in my smelly old tree.

Dearie dearie me, we are in a tizz today.

Put some imports needed for all platforms where they belong, and not in a
mingwin-only ifdef.

Cut'n'paste rawSystem from hslibs rather than messing around trying to copy
SystemExts.lhs into compiler/main, which makes for Makefile pain.

Driver support for ILX compilation

A bunch of changes (been waiting for the link to cvs.haskell.org to
come back):

- Two new flags -ignore-dot-ghci and -read-dot-ghci control the
  reading (or not) of ./.ghci and $HOME/.ghci.  This will be useful
  for automatic testing of GHCi.

- A new option -package-conf <file> allows reading an additional
  package.conf file, which can be used to keep a per-user set of
  packages.

- GHCi now fails gracefully on startup if linking the libraries
  specified on the command-line fails.

Added SysTools.Option, which lets you identify what are
file-path like options to SysTool.run<Foo>.

Using this, we can now precisely control when to transform
filepaths into a host-compatible format (i.e., we can DOSify
just the right bits under Win32).

Revert to System.system using the shell, hence need to use new rawSystem on
Windows to launch GHC's sub-processes.

More fixes to allow GHC to live in C:\Program Files

Restrict ghc-4.xx breakage to mingw only; not an issue for other plats

Fix typo (variable name wrong; wouldn't build)

wibble - the joys of CVS conflict merging

wibble

Drop the dependency on the Win32 library, as it is only used in an
extremely limited way (a single 'foreign import' is all that's reqd)
[Sorry Reuben, I don't buy your 'extra deps are good' argument :-) ]

runSomething: narrow down prev commit, only quote args under mingw;it interacts badly with -D quoting already done on other plats (and isn't reqd)

Add comment and use backslash consistently

1. Make GHC work with paths and filenames containing spaces (hopefully).
This is done by quoting all arguments sent to the shell. To avoid causing
problems, this means that each argument in a list had *better* be a single
argument, hence the next commit to PackageSrc.hs.

2. undosify the path passed as the -h argument to unlit, to make unlit work
on Windows again.

3. Fix getExecDir for Windows (broken by previous changes to the meaning of
-B).

Don't add -I flag for Windows gcc's include files here; do it in
package.conf instead.

Now assume that -B passes libdir, not libexecdir

Fix binary finding for Unix

s/extra-bin/bin/ because this is where all programs are installed to.
Perhaps it should be changed the other way around - I don't know what
this extra-bin was supposed to be.

check TMPDIR (got lost somewhere in the conversion to SysTools)

runSomething: don't export it

Fix spacing bogon.

Rewrite getExecDir to use GetModuleFileName on Windows (thanks, sof),
and switch unDosifyPath's definitions between Windows and Unix so that
it actually does something on Windows.

Rewrite getExecDir with Win32Registry calls. Duh.

Make getExecDir work on Windows by reading the registry

lib/gcc-lib -> gcc-lib

Changes to nuke RAWCPP.

Add notes

The "Warning: deleting non-existent foo" message should only be
printed in verbose mode.

Copy was ignoring its 'purpose' argument

Change the way that IO exceptions are handled and some associated details:

1. In the top-level exception handler, don't treat IO exceptions as a panic,
just print them out and stop.

2. In the slurping routines SysTools.copy and the fake cpp in
DriverPipeline, don't catch IO exceptions, just let them propagate.

Stop copy adding a newline to the end of the copy

Remove debugging statements^Wexpressions

Fix mangling of -B path.

Fix Unix copy (now same as Windows: slow, but working).

clean up remove_suffix:

  - only use it when getExecDir works (i.e. on Windows)
  - therefore, don't require that the build-tree TOPDIR has a
    /ghc/compiler suffix.
  - fix a bug with the installed build, where the binary lives
    in $libdir/bin not $libdir.

ghci-inplace should work again now.

Reimplement copy as a slurp in Haskell to avoid problems with pesky
Windows command-line tools. Grr.

Make stage two getExecDir for Windows work again. Where did it go before?

Keep pgm paths in native format