mailmap: Kevin Cox affiliation

Signed-off-by: Loic Dachary <loic@dachary.org>
mailmap: Accela Zhao affiliation

Signed-off-by: Loic Dachary <loic@dachary.org>
mailmap: Adam Crume affiliation

Signed-off-by: Loic Dachary <loic@dachary.org>
mailmap: Stephen Jahl affiliation

Signed-off-by: Loic Dachary <loic@dachary.org>
mailmap: George Ryall affiliation

Signed-off-by: Loic Dachary <loic@dachary.org>
mailmap: Brian Rak affiliation

and name normalization

Signed-off-by: Loic Dachary <loic@dachary.org>