into curl_rand.c and curl_rand.h

Fix OS400 makefile for tests to use the new Makefile.inc in libtest
Update the OS400 wrappers and RPG binding according to the current CVS source state

in the Watcom makefiles aren't quite correct).

renamed generated config.h to curl_config.h in order to avoid clashes when libcurl is used with other projects which also have a config.h.

add default USE_CURLDEBUG setting

improve usability with UNIX-like shells or a DOS command interpreters

added header inclusion guard

With the curl memory tracking feature decoupled from the debug build feature,
CURLDEBUG and DEBUGBUILD preprocessor symbol definitions are used as follows:

CURLDEBUG used for curl debug memory tracking specific code (--enable-curldebug)

DEBUGBUILD used for debug enabled specific code (--enable-debug)

C-Ares and IPv6 is no longer a bad combo.

Made OS400 version compilable again

Not actually needed to simply include some files in the distribution tarball.

So, until fixed this will remain FIXME.

setup_once.h.  Inclusion of each header file is based on the definition of
NEED_MALLOC_H and NEED_MEMORY_H respectively.

Improved Symbian support for SSL.

Options CURLOPT_REDIR_PROTOCOLS and CURLOPT_PROTOCOLS, and associated definitions added to RPG binding

_ Adjust OS400 make script for non-CVS distributions.
_ Upgrade ILE/RPG binding.
_ Define CURL_HIDDEN_SYMBOLS on OS400, since only CURL_EXTERN-marked symbols are exported.

non-blocking mode, and decouple function detection from function capability.

Daniel Fandrich noticed that curl_addrinfo was also missing in the build
process of other four non-configure platforms. Added now.