K 10
svn:author
V 8
theraven
K 8
svn:date
V 27
2017-09-07T17:51:35.163723Z
K 7
svn:log
V 195
Document some invariants for the XLC_ enum.

These can't be reordered without breaking other code.  Document that and add
some static asserts to ensure that anyone who tries gets build failures.

END