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.

Added TMPDIR to list of variables prepended to perl & sh scripts.

fix script installation *again*.

Finally fix the 'for i in ; do ...' problem.

Some shells have problems with 'for i in ; do ...', so protect the
relevant for loops with 'if test <string>; then ...'.

Replace three 'test ... && ...' sequences with 'if ... then ... fi',
since the test form would fail, causing some non-GNU makes to bomb
out (maybe they invoke sh with -e?).

use PACKAGE_BINS to get the actual binaries to install.

make this Makefile package-independant.

update to version 2.08

protect $$s for bash.

prepend SED and RAWCPP to all scripts, not just PACKAGE_LIB_SCRIPTS.

do the symlink thing when installing, not in the local tree.

Link ghc to ghc-$(version), not the other way around.  This means that
old versions won't be spammed when a new one is installed.

To go in 3.00

Upped version number; added SED and RAWCPP for lib_scripts

perl not being added to scripts' top line

update version number, and add stuff to install happy.

changing version number to 2.07

version ==> 2.07
PACKAGE_LIBSCRIPTS ==> PACKAGE_LIB_SCRIPTS

Prepend she-bangs to scripts rather than eval exec magic

ghc-2-03-p1 merged onto main trunk

merge from 2.02 branch

Prepend header to hscpp

2.02 fixes

2.02 release update

Major update to more-or-less 2.02