all _WIN32 [see commentary for clarification].

[as per http://cvs.openssl.org/chngview?cn=14551].

PR: 1218

(This were in 0.9.7-stable and 0.9.8-stable, but not in HEAD so far.)

PR: 1218,1185

loop option, which can give further 3KB code reduction.

Submitted by: Stefan Neis

Submitted by: Stefan Neis, Brian Havard

integrated yet, but it's tested and benchmarked [see commentary section
for further details].

SIZE_T].

maximum send fragment size. Allocate I/O buffers accordingly.