Fixed the Avatar height by correctly computing the half height of the capsule.
Fixed the Avatar height by correctly computing the half height of the capsule.

M-O-S-E-S/opensim,M-O-S-E-S/opensim,M-O-S-E-S/opensim,M-O-S-E-S/opensim,M-O-S-E-S/opensim,M-O-S-E-S/opensim,M-O-S-E-S/opensim