SwSrvc Fn 0000H: Get Switcher Version

 Expects: AX    0000H
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 Returns: CF    Carry Flag is clear (NC) is successful and...
          ES:BX address of a SwVersionRec structure
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    Info: Use a FAR call to the switcher entry address (see INT 2fH 4b02H)
          to obtain info about the active task switcher, including its
          name, version number, and the APIs it supports.

          See SwVersionRec for a layout of the returned data.

See Also: Switcher Services and Notifications
          INT 2fH 4bxxH (switcher functions)
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