Splits the module into files. Each file is given the name of the subroutine
it contains, with .al appended.
creates the file autosplit.ix, which serves
as both a forward declaration of all package routines and as a timestamp
showing when the hierarchy was last updated.
Takes the following arguments:
Filename of program or module to be split.
Name of directory hierarchy in which to store the split files.
If false, pre-existing .al files in the auto directory that are no longer part of the module are deleted.
If true, checks to be sure the module being split includes
use AutoLoader statement. If the statement is missing,
autosplit doesn't process the module.
If true, only splits the module if it is newer than autosplit.ix.