profiler 6.x-2.0-beta1

#892562 by yhahn: Allow profiler to be used as a library.
Recipe can now leave out input-formats, and the default input formats will remain.
#892564 by yhahn: Simplify .profile implementation requirements.
#897596 by yhahn: Add .info file for drupal.org packaging
#897620 by yhahn: Use drupal_flush_all_caches().
#900646 by yhahn: Backport of D7 install profile handling
#901816 by yhahn: Improve profiler components, split out IPA, implement hook_install() for profiles.
by yhahn: Allow profiles to override any profiler function by using function_exists() checks.
For security purposes, the user pass parameter is no longer supported. Instead, Profiler will now generate passwords for declared users.