.clang-format: disable DerivePointerAlignment
.clang-format: disable DerivePointerAlignment

everything outside of third_party should follow 'PointerAlignment:
right' i.e., associate the '*' with the variable

+ add a note about the clang-format that generated this file

Change-Id: I13e3f4f5fb6e22a8fa7fc3d06879c995b7c41a39
(cherry picked from commit e4290800b21478a3f9548c58b4f15c5ba5393073)

GrokImageCompression/aom,GrokImageCompression/aom,mbebenita/aom,mbebenita/aom,smarter/aom,GrokImageCompression/aom,smarter/aom,luctrudeau/aom,mbebenita/aom,luctrudeau/aom,luctrudeau/aom,mbebenita/aom,GrokImageCompression/aom,luctrudeau/aom,GrokImageCompression/aom,mbebenita/aom,smarter/aom,smarter/aom,GrokImageCompression/aom,luctrudeau/aom,mbebenita/aom,mbebenita/aom,mbebenita/aom,smarter/aom,mbebenita/aom,luctrudeau/aom,smarter/aom