cmsfs: Documentation

Signed-off-by: Josef 'Jeff' Sipek <jeffpc@josefsipek.net>

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+CMS Minidisk Filesystem
+=======================
+
+<FIXME: high-level description of CMSFS>
+
+
+Mount options
+=============
+
+(none)
+
+
+Extended attributes
+===================
+
+While the filesystem itself doesn't support extended attributes, the xattr
+interface can be used to extract additional information about each file.
+
+    system.items:    number of records in this file
+    system.lrecl:    record length
+    system.recfm:    record format
+
+
+Specification
+=============
+
+<FIXME: detailed description of the on-disk structures>
+
+
+Credits
+=======
+
+This implementation has been loosly based on a cmsfs patch from 2.4.12-ac6
+by Rick Troth <rtroth@bmc.com>.
+
+CMS minidisk (EDF) filesystem specifications taken from
+http://www.vm.ibm.com/pubs/cmsdacb/FSTD.HTML,
+http://www.vm.ibm.com/pubs/cmsdacb/ADTSECT.HTML,
+and the Linux kernel patches supplied by IBM (mdisk driver).
+
+
+Credits from the 2.4.12-ac6 patch
+=================================
+
+Thanks to Dave Hilbe for supporting this project.
+
+Thanks to Arty Ecock <ECKCU@CUNYVM.CUNY.EDU> for pointing me
+back at ADT after I had misunderstood it in my first look.
+
+Thanks to Rob van der Heij for help with the logic.
+
+Thanks to Neale Ferguson for "cpint".
+
+Thanks to Willem Konynenberg <wfk@xos.nl>
+for moral support and championing correct DASD I/O.
+
+Thanks to Alan Cox for help figuring out Linux VFS.
+
+Thanks to Reed Mullen for clarifying permission to use doc.
+
+Thanks to Marilyn Troth for advice about packaging,  helping
+me stay focused,  and for putting up with all the late nights.
+
+... and many others whom I am sorry to have omitted.