Avoid using FILE* where possible.
Tidy up handling of potential error situations for the php:// wrapper.

64bit fixes

Ensure that all fields are initialized to NULL.

Implement memory mapping for win32.
Could do with some rigorous testing; simple readfile() tests here appear to work.

Another big commit (tm).

Main Changes:
- Implement a socket transport layer for use by all code that needs to open
some kind of "special" socket for network or IPC.
- Extension

Another big commit (tm).

Main Changes:
- Implement a socket transport layer for use by all code that needs to open
some kind of "special" socket for network or IPC.
- Extensions can register (and override) transports.
- Implement ftruncate() on streams via the ioctl-alike option interface.
- Implement mmap() on streams via the ioctl-alike option interface.
- Implement generic crypto API via the ioctl-alike option interface.
(currently only supports OpenSSL, but could support other SSL toolkits,
and other crypto transport protocols).

Impact:
- tcp sockets can be overloaded by the openssl capable sockets at runtime,
removing the link-time requirement for ssl:// and https:// sockets and
streams.
- checking stream types using PHP_STREAM_IS_SOCKET is deprecated, since
there are now a range of possible socket-type streams.

Working towards:
- socket servers using the new transport layer
- mmap support under win32
- Cleaner code.

# I will be updating the win32 build to add the new files shortly
# after this commit.

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Fixed various compiler warnings.

Use native flock() whenever possible.

Added locking to streams.
Allow PHP to automatically release locks on files when terminating the
stream.
Fixed bugs in the handling of the 3rd optional parameter to flock().

MFB: Bunch of streams related fixes.

ws fixes + missing $Id$ tags, headers added

Move streams files around a bit, to ease maintenance.
I will update the win32 .dsp in a moment.