r1262 merge: if a subrequest was finished and SSI was in middle of SSI command parsing and the command was a fast subrequest then the second subrequest output was just after first subrequest output and response part of main request between the subrequests went after the second subrequest.

# Copyright (C) Igor Sysoev


have=NGX_USE_HTTP_FILE_CACHE_UNIQ . auto/have
have=NGX_SUPPRESS_WARN . auto/have

have=NGX_SMP . auto/have