both now provide the number of running handles back to the calling function.

set a private pointer added to the internal libcurl hash table for the
particular socket passed in to this function.

Prevent definition of HAVE_WINxxx_H symbols and avoid inclusion of Windows headers when compiled with Cygwin in POSIX emulation mode.

Modified the callback proto used for it.

interface and the change could break the compilation of thrid
party apps which link against this library.

windows.h winsock.h winsock2.h ws2tcpip.h is done in setup.h

documentational purposes.

Changes for removing libcurl.def file on Win32.
Mark public functions with "CURL_EXTERN".

curl/multi.h header to work better in winsock-using apps.

known to really NEED it as another system that doesn't have it came up:
very old Linux libc5-based systems (as addition to all HPUX versions).

The only known system at this point is AIX.

make an adjustment to catch this.

AIX when this fix is applied and I cannot see how this will break any
systems.

include sys/time.h as well