move AAMFitters to aam.fitter
move AAM/PatchBasedAAM to aam.base from aam.builder
adds clm.fitter package, rearranged to be as SDM is
SDM moved to similar package structure as CLM/AAM
Merge remote-tracking branch 'upstream/master' into fitterpy
Merge pull request #432 from jabooth/fitterpy

aam.fitter, clm.fitter, sdm.trainer packages