rename axis_angle_to_mat3_no_norm() --> axis_angle_normalized_to_mat3().
this matches closer to convention from existing functions - angle_v3v3() angle_normalized_v3v3().

also added assert to ensure argument given to axis_angle_normalized_to_mat3() is in fact normalized.


git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@56064 954f8c5b-7b00-dc11-b283-0030488c597c