Controlling where ATLAS will move files to during install step

ATLAS supplies some flags to control where ATLAS will move files to when you do the make install step (§). These flags are taken from gnu configure, and they are:

• --prefix=<dirname> : Top level installation directory. include files will be moved to <dirname>/include and libraries will be moved to <dirname>/lib. Default: /usr/local/atlas
• --incdir=<dirname> : Installation directory for ATLAS's include files. Default: /usr/local/atlas/include.
• --libdir=<dirname> : Installation directory for ATLAS's libraries.
  Default: /usr/local/atlas/lib.