Create an algorithm to load VULCAN's calibration file

[wdzhou]

VULCAN has its own calibration file to do time focusing. The idea is somehow similar as that in Mantid, but it works in TOF but not d-spacing. Write a new algorithm similar to LoadCalFile() to load VULCAN's offset file, DIFC file and bad pixel file.

A discrepancy of the naming of banks between Mantid and current VUCLAN's IDL code is found. Modify the geometry file to make it consistent.

[wdzhou]

This issue was originally trac ticket 9643

[wdzhou]

http://trac.mantidproject.org/mantid/raw-attachment/ticket/9643/verify9643.py
(uploaded by @wdzhou on 2014-07-07T19:42:16)

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http://trac.mantidproject.org/mantid/raw-attachment/ticket/9643/pid_offset_vulcan_new.dat
(uploaded by @wdzhou on 2014-07-07T19:42:31)

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http://trac.mantidproject.org/mantid/raw-attachment/ticket/9643/mod_difc_vulcan_new.dat
(uploaded by @wdzhou on 2014-07-07T19:42:43)

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