revap types, step 1

[Ron Young]

 Remember real*8, -r8, real*16, -r16 are the number of bytes used to store
that data type. If a given machine is not byte addressable ,then
logical*1,logical*4,integer*1,integer*2 and maybe integer*4 don't make
since. Equivalence statements and remapping common is always possible if all
these data types are supported. I think that you should take care of byte
addressable machines and all others should take their chances.

Ron Young