(epackage-autoload-remove-path-names-buffer): New

Signed-off-by: Jari Aalto <jari.aalto@cante.net>
(epackage-batch-autoload-generate-loaddefs-dir): tighten regexp to read previous *0loaddefs* with directory-files

Signed-off-by: Jari Aalto <jari.aalto@cante.net>