MERGE TO STABLE

Bindists should now work again, when doing "make install" at least.
"make in-place" is probably still broken.

Fixes #660

Use perl rather than sed to munge the package.conf file; avoids
portability problems with sed (previous version didn't work on Solaris).

use test -f instead of -s, for portability.

Remove some non-portable uses of /bin/test, from Christian Maeder.

Mac OS X: Make bindist work with dynamic libraries

MERGE TO STABLE

Allow for optional binary installation

Fix sed command line

Fill in the haddock-interfaces and haddock-html fields in the
package.conf files.

To do this I had to make some changes:

  - haddock-interfaces requires the value of $(datadir).  We can't
    just plug this in, because $(datadir) might change at install-time
    (eg. a Windows installer can be placed anywhere, as can a Unix
    binary .tar.gz distribution).  The current trick is for the
    compiler to splice in the value of $libdir in package.conf at
    runtime.  So we could extend this mechanism and tell the compiler
    the value of $datadir via a command-line option, but that seems
    ugly.

    On Windows, $datadir==$libdir, so we don't need any changes:
    package.conf still uses $libdir, and a Windows installation is
    independent of its absolute location.  Even 'make install' on
    Windows should have this property.

    On Unix:
	- for 'make install' and in-place execution, we just use
          absolute paths in package.conf

	- for a binary dist, we generate a package.conf that refers
	  to $libdir and $datadir, and splice in the values at
	  install-time (distrib/Makefile-bin.in).

  - Also, I renamed $libdir to $topdir to more closely reflect its
    actual meaning.  This is somewhat malicious in that it will flush
    out all those clients using $libdir when they really shouldn't
    be :-)

Fix the install-datas target when $(INSTALL) is ./install-sh

Small fix to the documentation installation

Updates, mainly to get the documentation installed

cygwin-specific path mangling of CWD no longer reqd

Make the binary distribution Makefile work with non-GNU make when
installing in-place. MERGE TO STABLE

- Generalise GHC-specific messages in the post-installation
  announcement, and make it stand out a bit more.

- Fix documentation installation for non-GHC packages.

Pass $(libdir) to the post install script, not $(prefix)

merge rev 1.42.2.1

Make installation of documentation in binary dists work properly.
Also install documentation by default for make install.

Fix up make-inplace for binary distribs.

Clean up the post-install-script mechanism a bit, so that the script
for project is <project>/mk/post-install-script.

For project ghc, don't install pkgconf unless BIN_DIST=1.

Make binary-dist installations work, by generating a proper package.conf
file.  This is done by allowing fptools packages to supply an
arbitrary post-install shell script, which the bin-dist 'make install'
runs last of all.  In Project=Ghc's case, the post-install script
runs pkgconf with appropriate params to create the package.conf
file in the right place.

allow VERSION_SYMLINKS_FOR to be configured

cp and chmod during install switched over in case we're copying from a
read-only medium or something.

Simple fix for install of HTML: mimic recursive install with chmod and cp.

Rename the make variable TMPDIR to DEFAULT_TMPDIR.  This fixes the
problem that saying 'TMPDIR=/foo make' in an fptools tree didn't work,
because GNU make is in the habit of overriding an environment variable
with the value of the corresponding make variable in a sub-process.

Build System Cleanup
--------------------

This commit is intended to clear the way for automatic RPM building.
In particular, the idea is that 'make install' doesn't build anything,
so you can do

	make install prefix=/some/tmp/prefix

to install everything in /some/tmp/prefix, but leave the hardwired-in
install directories the same.

For scripts that depend on the install dir (currently just the GHC
driver and mkdependHS), we now build two versions: <script>-inplace,
which is used for running the script from the build tree, and
<script>, which is the to-be-installed version.

NOTE: binary distributions are now a little bit trickier to build.
You *must* include the line "BIN_DIST=1" in your build.mk if you
intend to make a binary distribution from the current build tree.
This is because certain scripts have to be built differently, and we
don't rebuild them when doing 'make binary-dist' anymore (since 'make
binary-dist' just does a 'make install' with a re-targetted prefix,
just like the RPM builder).

Other changes

	- the binary-dist machinery is now all in fptools/Makefile
	- removed a gratuitous $(package)-$(version) level of
	  directories from the binary distribution.
	- binary distributions are now placed under the package
	  name, rather than fptools/fptools.
	- various other minor cleanups.

Patched my previous patch ($ vs $$, && vs if/then/fi). Installing a
Happy binary-dist still only creates a happy and no happy-1.6
executable, but this has very probably nothing to do with my changes.

Two checks for empty file lists added.

No more RAWCPP, thank you.

When installing, append  to entries in PACKAGE_BINS list

Install the docs in $real_datadir, not $datadir.

install-bin:
   * if any of $(VERSION_SYMLINKS_FOR) already exists as a symlink,
     replace it with a new one.

- mk-version-symlinks not needed any more: the links are installed by
  the relevant Makefiles.

- install the link from $(package) to $(package-version) in the
  installation directory.

Perform UNC->DOS translation on what bash-cygwin32's pwd returns.