AFS3 Fileserver Capabilities

Obtain the fileserver's capabilities by calling RXAFS_GetCapabilities().

AFS3 service capabilities are identified by small numbers.  The
GetCapabilities calls (and RXAFSCB_TellMeAboutYourself) represent
capability information as a vector of 32-bit integers.  The first
value in this vector holds a bitmask representing the first 32
capability codes, with the low-order bit representing capability 0.
Presently, the format of the remaining integers is undefined, and
there is no way to represent capabilities 32 and above.

  Code  Capability                      Contact/Source
======  ==============================  ==============================
     0  ERRORTRANS                      jaltman #24396
     1  64BITFILES                      jaltman #24396
     2  WRITELOCKACL                    OpenAFS 80e88d6a80fc3fc0d15650f20ea7fc3fece1a1e4
     3  SANEACLS                        OpenAFS 62e6fc36b129729a571264bfb661114dce12bc2e
     4  EXT_CALLBACK                    matt #124161
     5  BYTE_RANGE_LOCK                 matt #127319
 >= 32  RESERVED pending protocol revision