NetWare has a fixed lengh stack. Since MAX_STRING_LEN is set

NetWare has a fixed lengh stack.  Since MAX_STRING_LEN is set
to 8k, one call to send_parsed_content() chews up 24k of stack space.
During a server-side include evaluation this function is
called recusively, allocating 24k each time.  Obviously it
doesn't take long to blow a 64k stack which is the default
for Apache for NetWare.  Since MAX_STRING_LEN is used all
throughout the Apache code, we should rethink using a default
of 8k especially in recursive functions.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@89548 13f79535-47bb-0310-9956-ffa450edef68