[yt-dev] duplicate obtain_rvec and obtain_rv_vec functions in source

Hi all, It seems that there are two definitions in the yt source of the following functions: - obtain_rvec - obtain_rv_vec For each of these, one is in utilities/lib/misc_utilities.pyx and the other is in utilities/lib/geometry_utils.pyx. Also in each case, the source code for each is extremely similar, with the versions in misc_utilities containing additional keywords. At least in the case of obtain_rv_vec, both versions are called in different places in the code. Does anyone know of a reason for this? If there is one, this looks like a mess that should probably be cleaned up. Britton