make debug-solaris-[u]sparc-gcc more useful

The Mingw32 configuration entry was missing one colon (found by
"Zot O'Connor" <zot@ZotConsulting.com>).
Also, Windows probably does not need the warning about multi-threading.

configuration change for debugging

Use the same CPU recogition method for FreeBSD 3 as for the other FreeBSD
versions. (The FreeBSD and FreeBSD-elf Configure entries were identical.)

Don't use inline assembler when configured for "no-asm".

Make some debug-... configurations more useful for debugging.

Provide fallback configurations for all hpux... configurations
(problems with BN_LLONG have been reported both for hpux-cc
and for hpux10-gcc).

NeXT 3.3 can handle -O3 (3.0 can't).

hpux-cc (HPUX 9.x) does not work with BN_LLONG (floating point exceptions).

Submitted by: Andreas Ley <andy@rz.uni-karlsruhe.de

Fix determination of Perl interpreter: A perl or perl5
_directory_ in $PATH was also accepted as the interpreter.

Put SC5 warning back in, future changes might trigger the compiler bug again.

Don't define _ANSI_SOURCE for NetBSD.

Submitted by: Eric Ding <ericding@MIT.EDU>

Delete unnecessary newlines in TABLE

Some pre-POSIX systems don't have unistd.h (but e.g. lib.c).
Allow configuring the name of that header file.

Use only -O, not -O3 for NeXTstep:

> The nextstep port uses the -O3 switch to gcc. Support for -O3 didn't appear
> until later (and buggier) versions of NeXTstep. Use -O instead, or ha

Use only -O, not -O3 for NeXTstep:

> The nextstep port uses the -O3 switch to gcc. Support for -O3 didn't appear
> until later (and buggier) versions of NeXTstep. Use -O instead, or have a
> separate port.

Submitted by: Mark Crispin <MRC@Panda.COM>

show more ...

"linux-sparc" configuration.

Submitted by: Christian Forster <fo@hawo.stw.uni-erlangen.de>

"linux-sparc64-gcc" configuration
Submitted by: Ray Miller <ray.miller@oucs.ox.ac.uk>

Support the EBCDIC character set and BS2000/OSD-POSIX (work in progress).

Submitted by: Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>

gcc dumps core on HPUX.

Adjust bsdi-elf-gcc to look more like FreeBSD-elf, linux-elf and the like.

BSD/OS 4.x support (bsdi-elf-gcc)

Some assembler-related clean-ups.

sco5-gcc configuration.

Submitted by: David Greaves

Set #!... path to Perl in apps/der_chop automatically.

Temporary workaround for IRIX64 build.
Submitted by: Andy Polyakov <appro@fy.chalmers.se>