Hopefully banish bogus "Happy version 1.6 or later is required to
compile GHC" messages.  The new rule is: if you don't have an
installed copy of Happy, but have a Happy source tree, we point the
build system at the latter (and pull the version number out of
happy/mk/version.mk).

Fix wibble in setting of HappyCmd.

Only require happy if compiling ghc, and ask for version 1.6

Don't attempt to discover the exact location of cpp, instead use 'gcc
-E'.  With the right combination of flags, it seems we can get the
same behaviour as calling cpp directly.

Use $CC -E instead of gcc.

Workarond apparent bug in FreeBSD 'sh'.

Look inside build tree too for happy binary

Use 'data_start' as the end-of-text marker if it exists.  This includes
the read-only text section on Linux/ELF, which is what we want.

Added `timezone' config test.

Prepared to support i?86-*-mingw32

Fixed caching bug in FPTOOLS_END_{TEXT,DATA}_SECTION.

Move 4.01 onto the main trunk.

Merge from HEAD

Re-install hack which fixes 'leading underscore' feature test under cygwin32

Distinguish between defn and use of etext and end syms; they're not
the same on platforms where we have to resort to asm labels.

Added tests required by Hugs

fix a couple of bugs in the text/data segment end symbol tests.

Add support for FreeBSD 3.0 (ELFish).
Rename i386-unknown-freebsd to i386-unknown-freebsd2, and add
i386-unknown-freebsd3.

NOTE: this won't bootstrap an ELF GHC using an a.out GHC, some laying
on of hands is required for that.

Added feature tests for etext and end plus text vs. data section placement in executable

O_BINARY test: protect fcntl.h include

Add feature test for O_BINARY

remove old test for GLIBC.

Fix leading underscore test.

Added long long feature test; macro namespace cleanup

define LEADING_UNDERSCORE in config.h.

GHC_CHECK_ALIGNMENT changed to check natural alignment restrictions

Added alignment tests

Added more feature tests

New attempt at converting backslashes into forward ones.

revert to version 1.9 of AC_PROG_GNUCPP.

revert 'tr' breakage for the time being.

delete a spurious space.

Further RAWCPP tweakage

Changed translation of backward slashes to forward ones (now in perl.)

alpha-dec-osf1 and alpha-dec-osf3 are now separate configurations.

AC_PROG_GNUCPP: look for (\/|\\)cpp, not (\/|\\\\)cpp

AC_PROG_GNUCPP: translate backward slashes into forward ones.
AC_HAVE_GCC: tweaked sed regexp to catch cygnus gcc snapshot
version strings (i.e., version cygnus-2.7.2...)

reinforce the test for Happy: version 1.4 or later is now *required*

make the RAWCPP test a little more sensible.

remove bogus [ ] in macro for leading underscore test.