CVS log for pvfs2/src/io/buffer/ncac-lru.c
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revert style changes back to previous versions.

run maint/pvfs2indent-80col.sh on all .c files to correct style :)

Reverse merge from trunk to lockd-branch...

reverse merge of branch

reverse merge of trunk to branch

fix likely precedence error

fixes to small io stuff to get test-zero-fill working again.  Also committing updates from HEAD to make things easier for merge.

committing lld/llu fixes to 1.3.1 branch

moved the llu and lld macros to an internal header so that we don't have to include pvfs2-config.h in the installed pvfs2-types.h header.

* malloc.h is obsolete in freebsd, check for it
* No error.h in freebsd
* linux allows Lu,Lx, and Ld to be interchangeable with llu,llx, and
lld.  Other platforms (solaris, bsd) don't.  Replaced all the L*
with ll*.
* bsd doesn't have mntent.h.  use fstab.h and our own funcs.
* bsd doesn't know about ssize_t.  Use size_t instead.
* bsd doesn't have asm errnos.  Check for each of those
errno macros and if not defined define to -1
* check for db3/db.h db4/db.h header if db path is specified using
--with-db
* darwin has aio support builtin, doesn't need -lrt
* remove kernel stuff in pvfs2-types.h that sets WORDSIZE.  gcc
defines __LP64__ on archs with 64bit longs so we use that instead.
* darwin's open doesn't accept O_LARGEFILE.  off_t is an int64 by
default.  define O_LARGEFILE if it hasn't been.
* need to run ranlib on darwin after libpvfs2.a gets installed to regenerate
table of contents

This patch should fix a few more of the pesky warnings that shows up
on an x86_64 machine with gcc and when built with --enable-strict.
Also, this patch should fix the -EACCES error (permission denied)
that Ekow reported which was caused by broken permission checking
during the recent acl merges.

- make sure that our error routines strip any known class error bits
  instead of deciding that they're unrecognized if set
- improved trove error handling
- improved pvfs2-server error handling
- fixed crash bug in our config parser that tried to strdup strings
  that might be NULL
- pvfs2-types header file simplification and cleanups

- apply Nathan's patch to remove warnings recently added to Jieshing's
  buffer cache code

  patch available at:
  http://www.beowulf-underground.org/pipermail/pvfs2-developers/2004-October/000885.html

Changes to the buffer code:
    1) Simplify the concurrency control in the buffer code. The upper
       layer is responsible for the write-sharing control.
    2) Separate cache mangement code from other code. "ncac-lru.c" is
       for LRU policy. "ncac-arc" is for ARC policy which is added soon.
    3) Bug fixes in the list access.

Still working on it for writes and more testing.