"make errors".

PR: 1196
Submitted by: Russel Ruby

initial testing.

WARNING WARNING WARNING, experimental code, handle with care, use at
your own risk, may contain nuts.

        -Wmissing-prototypes -Wcomment -Wformat -Wimplicit -Wmain -Wmultichar
        -Wswitch -Wshadow -Wtrigraphs -Werror -Wchar-subscripts
        -Wstrict-prototypes -Wreturn-type -Wpointer-arith  -W -Wunused
        -Wno-unused-parameter -Wuninitialized

PR: 1170
Submitted by: Yair Elharrar
Reviewed and edited by: Nils Larsch

did the old code) and not compiled in yet...

    	./configure no-deprecated [no-dsa] [no-dh] [no-ec] [no-rsa]
    	make depend all test
work again

PR: 1159

first everywhere in crypto and skip stdio.h and string.h [because it
includes them].

[most importantly] put back dependencies accidentaly eliminated in
check-in #13342.

- hide the EC_KEY structure definition in ec_lcl.c + add
  some functions to use/access the EC_KEY fields
- change the way how method specific data (ecdsa/ecdh) is
  attached to a EC_KEY
- add ECDSA_sign_ex and ECDSA_do_sign_ex functions with
  additional parameters for pre-computed values
- rebuild libeay.num from 0.9.7

is made to directly cast a function of one type to what it considers and
incompatible type. In particular gcc 3.4.2.

Add new openssl_fcast macro to place functions into a form where the compiler
will allow them to be cast.

The current version achives this by casting to: void function(void).

(Also improve util/ck_errf.pl script, and occasionally
fix source code formatting.)

EC_GROUP_new_by_nid -> EC_GROUP_new_by_curve_name

during "make errors" and thus during "make update".

Fix lots of bugs that util/ck_errf.pl can detect automatically.
Various others of these are still left to fix; that's why
"make update" will complain loudly when run now.