| Compile an object from a LPC file, specified by the argument string
with ".c" appended. The returned object will have the argument string
If the object to be compiled already exists and is not inherited by
any other object, it and all of its clones will be upgraded to the
new version. Variables will be preserved only if they also exist in
the new version and have the same type; new variables will be
initialized to 0. The actual upgrading is done immediately upon
completion of the current thread.