Review 26900

C. Thomas Tyler
mkdirs.sh v4.0.0:
* Added deployment of Version file to /p4/Version.  A future
upgrade_sdp.sh in the next SDP release will make use of this.
* Accounted for directory structucre change of Maintenancd to Unsupported.
* Added standard command line procssing with '-h' and '-man' doc flags,
and other flags (all documented).
* Added in-code docs and updated AsciiDoc.
* Enhanced preflight testing, and fixed '-test' mode installs.
* Added support for installing to an alternate root directory.

verify_sdp.sh v5.7.0:
* Added check for /p4/Version file, and checked that other legacy
SDP methods of checking version
* Added sanity check for crontab.
* Added 'test skip' mechanism to skip certain tests:
 - crontab
 - version
 - and license

Update test_SDP.py:
* Adusted test suite to account for various changes in mkdirs.sh.
* Added 'dir' parameter to run_cmd() and sudo_cmd(), to run a command from
a specified directory (as required to test new mkdirs.sh)
* Added check_links() similar to existing check_dirs() function.
#1: Change 26900 shelved into //guest/perforce_software/sdp/dev/Server 5 0 0
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