Reviewed-by: NStephen Henson <steve@openssl.org>

The following #ifdef tests were all removed:
	__MWERKS__
	MAC_OS_pre_X
	MAC_OS_GUSI_SOURCE
	MAC_OS_pre_X
	OPENSSL_SYS_MACINTOSH_CLASSIC
	OPENSSL_SYS_MACOSX_RHAPSODY
Reviewed-by: NAndy Polyakov <appro@openssl.org>

PR: #3424,#3423,#3422

Submitted by: Andreas Krebbel

redundant as result.

PR: 1195

PR: 1195

PR: 1130

recommended -DMD32_REG_T=int in particular.
PR: 893
Submitted by: Michal Ludvig <michal-list@logix.cz>

actually be used, namely x86* platforms [because they don't bomb on
unaligned access]. This resulted in 30-40% [depending on message
length] improvement for SHA-256 compiled with gcc and running on P4.
In the lack of assembler implementation I give the compiler all the
help it can possibly get:-)

available compiler versions generated bogus machine code trying to
compile new crypto/des/cfb_enc.c. Secondly, 8th version defines
__GNUC__ macro, but fails to compile *some* inline assembler correctly.
Note that all versions of icc implement MSC-like _lrot[rl] intrinsic,
which is used now instead of offensive asm. Finally, unnecessary linker
dependencies are eliminated. Most notably dependency from libirc.a
caused trouble at application start-up, if libcrypto.so is linked with
-Bsymbolic (which it is).

PR: 780
Submitted by: Verdon Walker <VWalker@novell.com>
Reviewed by: Richard Levitte

Obtained from: Andy Polyakov <appro@openssl.org>

I've covered all the memset()s I felt safe modifying, but may have missed some.

Submitted by: Nils Larsch

Submitted by: Toomas Kiisk <vix@cyber.ee>

Make EVP_Digest*() routines return a value.

TODO: update docs, and make soe other routines
which use EVP_Digest*() check return codes.

sure they are available in opensslconf.h, by giving them names starting
with "OPENSSL_" to avoid conflicts with other packages and by making
sure e_os2.h will cover all platform-specific cases together with
opensslconf.h.

I've checked fairly well that nothing breaks with this (apart from
external software that will adapt if they have used something like
NO_KRB5), but I can't guarantee it completely, so a review of this
change would be a good thing.

which can't stand GNU C assembler templates.

qualifier in asm definitions as it prevents compiler from moving
the instruction(s) during optimization pass.