2.99.37 -- small(?) changes

[Matti Aarnio <mea@nic.funet.fi>]

... in our series of "famous last words" ...

	- Fixed mailbox program race condition that was reported recently
	- Generic configurable runtime mechanism for choosing locks at
	  mailboxes/files (See  SiteConfig{.in})
	- Scheduler can now migrate its jobs into subdirectories, and thus
	  shorten average needed directory scan time when opening files;
	  a usefull property for some busy systems without clever directory
	  caches
	- Performance things at SMTP channel (it is a miracle what
	  one underpowered machine can tell you...)
	- Updated some man-pages

/Matti Aarnio <mea@nic.funet.fi>


Sun Aug 18 19:10:44 1996  Matti Aarnio  <mea@nic.funet.fi>

	* INSTALL, README, README.PERFORMANCE, README.UPGRADEING,
	  SiteConfig.in, man/*.[138]:
	    Documentation update

	* Makefile.in:
	    Version 2.99.37 for release

	* compat/sendmail/sendmail.c, libc/mail.c, smtpserver/smtpserver.c,
	  router/libdb/ndbm.h, scheduler/transport.c, router/db.c,
	  transports/libta/ctlopen.c
	    <fcntl.h> testing check

	* router/functions.c, router/rfc822.c:
	    Add "env-end\n" into the boundary of envelope, and
	    message body.

	* router/rfc822.c:
	    Add a bit more smarts (copied from the scheduler) at
	    reading recipient addresses from canned messages.

	* include/ta.h, transports/libta/lockaddr.c,
	  transports/libta/ctlopen.c, transports/libta/diagnostics.c:
	    Parameter changes at  lockaddr()
	
	* libc/whathost.c:
	    More fixes at more systems  (and less memory leakage)

	* libmalloc/externs.h, libmalloc/getmem.c, libmalloc/malloc.h,
	  libsh/io.c:
	    (back)porting to SunOS 4.1.4 with oddly configured gcc-2.6.3
	    It did indeed spew error messages at some files...

	* scheduler/mailq.c:
	    Initial preparations for two-way interactive querying of system
	    status

	* scheduler/mailq.c, scheduler/msgerror.c, scheduler/prototypes.h,
	  scheduler/scheduler.c, scheduler/scheduler.h, scheduler/threads.c,
	  scheduler/transport.c, scheduler/update.c:
	    Scheduler work-spool can now be hashed into one, or two levels
	    of indirect hashesh.  See ``-H'' option at man-page.

	* smtpserver/smtpserver.c:
	    ENCHANGEDSTATUSCODES -facility.

	* transports/mailbox/mailbox.c:
	    - Runtime configurable selection of locking methods.
	    - Corrected a file creation race condition

	* transports/smtp/smtp.c:
	    When doing PIPELINING, use some additional smarts as to when
	    there is any need to do system calls -- SMTP commands are sent
	    in larger chunks, and replies are not to be expected before
	    they are sent, nor forever after..
	    (Just reducing the number of syscalls when using PIPELINING.)