variants from the BFD universe. Leave the 64-bit types for now,
since they are in flux.
* aoutx.h, hp300hpux.c: Eliminate needless (int32_type) casts.
* libaout.h (GET_SWORD): Convert (int32_type) to (int).
* ieee.c: Convert uint8e_type => unsigned char.
* oasys.c: Extensive changes to eliminate obsolete types.
These depend on changes in ../include/oasys.h as well.