Fix thread safety issue

Implement contstants on win32
@Implement platform independant socket error constants, which benefits error handling

Fix crash bug and memory leak in vectors
#still need to revisit how these are done, i.e. they are not binary safe

@socket_recvfrom is now binary safe (Jason)
Zero the structure so that when the tcp layer of the OS decides to ignore it,
we do not think we are getting a value

Implement socket errno values for UNIX based platforms.
They are all prefixed with SOCKET_ to preserve name space
Win32 will follow...

Nuke warnings on strict compilers

Remove sleep workaround, and fix the actual win32 memory leak which
was occurring in the error reporting system. The reason why sleepex appeared
to be working was because it suppressed EWOULD

Remove sleep workaround, and fix the actual win32 memory leak which
was occurring in the error reporting system. The reason why sleepex appeared
to be working was because it suppressed EWOULDBLOCK errors in the example
(which was non-blocking)
@Fix win32 memory leak in /ext/sockets that would occur on any error condition
@Fix host resolution error messages on win32

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- Fix proto.

workaround for a win32 memleak
# this definitely has to be revisited !
# maybe we should use winsock2 and overlapped IO

Fix build on IRIX for both mips and gcc

Fix overflow

Fix 10830, and 17074
FreeBSD requires the exact length of the socket type

socket_write() should just use the standard socket error macro so that errors will be consistent if the macro ever changes

- Update protos for socket_read() and socket_write().
- Set last_error in socket_write().

- Update protos for getpeer/getsock-name.

Fix BYREF_FORCE that was not being read
Fix error message

- Rename setopt and getopt to set_option and get_option, provide alias.

- Fix couple of problems with socket_create_pair():
- Force fourth argument to be passed by reference
- Since the argument is modified there is no need to force it to be an array

- Fix couple of problems with socket_create_pair():
- Force fourth argument to be passed by reference
- Since the argument is modified there is no need to force it to be an array
since it's destroyed anyway
- Only modify the argument if socketpair() was successfully
- Fix string modified for error message message
- Set global last_error when socketpair() fails

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- Add SOMAXCONN constant.

- WS fixes

Changed socket_select to force reference copy, the older code would modify all references
@Fixed a bug in socket_select() that could cause unexpected behavior when using a statement
@ like $w

Changed socket_select to force reference copy, the older code would modify all references
@Fixed a bug in socket_select() that could cause unexpected behavior when using a statement
@ like $w=$e=array($sock);
@This change unfortunately prevents the use of constant values(NULL) for the socket array paramaters.
@Instead use a temporary variable or an expression with the leftmost member being a temporary variable.
@ ex. socket_select($w, $r, $e=NULL, 10);

Also fix small memory leak.

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- Forgot to update proto

- Allow resetting the module global last_error too.

- Fix WS and CS a bit

- Store last errno in the module global 'last_error' implicitely
- Set the global 'last_error' explicitely for functions which can't return an
error withing a single socket context (socket_

- Store last errno in the module global 'last_error' implicitely
- Set the global 'last_error' explicitely for functions which can't return an
error withing a single socket context (socket_create and socket_select)
- Modified socket_last_error() to return global modules last
error if no socket resource is given
- Added a couple of more E_WARNING messages in case something
goes foobar so the user isn't left alone in the dark.

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