new copyright; att/bsd/shared

const is an ANSI C keyword

(1) The compiler permitted the ordinary relational operators to be used with
LOGICAL values but didn't produce useful results. Now you can use .eq. and
.ne. (although a warning is printed) and the o

(1) The compiler permitted the ordinary relational operators to be used with
LOGICAL values but didn't produce useful results. Now you can use .eq. and
.ne. (although a warning is printed) and the other relational operators
elicit errors. (2) Length information on expressions is now properly
propagated and freed; this used to cause confusion for certain concatenations.

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Someone forgot about comparisons of logical constants in consbinop() --
the results of such tests were garbage.

Fix memory management problem with reordering of array dimension and
substring code in mklhs().

(1) Lots of changes for handling hardware errors which can crop up
when evaluating constant expressions. (2) Don't optimize first/last char
values when they contain function calls or array reference

(1) Lots of changes for handling hardware errors which can crop up
when evaluating constant expressions. (2) Don't optimize first/last char
values when they contain function calls or array references. (3) Name
the offending subroutine when it's used as a function. (4) Fix bug in
mklhs() that caused the 'first character' substring parameter to be
evaluated twice.

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Added Jerry Berkman's changes to call pow() directly rather than
indirectly through pow_dd(), in mkpower(); fixed another of my goofs in
the substring parameter conversion code in mkprim().

fix from donn@utah-cs

from donn@utah-cs.ARPA

4.3BSD beta release version