Support 64 bit integers on 32 bit architectures.

No binary change on amd64 and there should be no differences on any
other 64 bit architecture either (because long = int64_t).

ok cheloha, tb

Favor usage of __func__ in warning/error messages. Some of them referred to the
wrong function and fix the rest for consistency.
Diff from Michael W. Bombardieri with some cosmetic cleanup applied.

Favor usage of __func__ in warning/error messages. Some of them referred to the
wrong function and fix the rest for consistency.
Diff from Michael W. Bombardieri with some cosmetic cleanup applied.

ok benno@ tb@

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Remove code that has been disabled since 1999. From Michael W. Bombardieri who
also took the time to provide an excellent explanation on why the code isn't
useful on tech@.

ok jca@

Introduce internal_warningf() and mark internal_errorf() as noreturn

This helps tools like scan-build, and follows the example of warningf()
and errorf(). ok anton@

Bring back the sign compare changes, this time with a fix from otto@
that fixes the issues seen on hppa. OK deraadt@ otto@

Back out sign compare changes that appear to cause problems on hppa.
Requested by deraadt@

Add WARNINGS=yes to ksh and fix the resulting sign compare warnings.
OK tb@

Add uses of areallocarray(). mksh and Bitrig ksh already have similar
functions. With help from Theo Buehler.

ok nicm@

Move string.h include from sh.h to the files that use it.

ok nicm@

remove null check before afree. from Michael McConville

lint is dead: delete the trivial uses of /* VARARGS[0-9]+ */
(others require more care)

Remove unnecessary casts, from Michael McConville. No binary change.

correct spelling of NULL from (char *)0. from Michael McConville.
ok md5

remove casts and null checks before free. from Michael McConville
ok deraadt

fptreef() always returns 0 and we never use the return value anyway,
so make it void; from Michael W. Bombardieri.

plug a memleak when freeing io redirection in commands.
the leaked memory is actually reclaimed when the command
finishes but may grow until that happens, e.g. during
command execution.

ok phessler@

plug a memleak when freeing io redirection in commands.
the leaked memory is actually reclaimed when the command
finishes but may grow until that happens, e.g. during
command execution.

ok phessler@.
testing sobrado@ jmc@ oga@.

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fix lint comments, no functional changes; ok ray

lots of indentation cleanup, now ksh is readable like our other code.
double checked to make sure no binaries change, and eyed by niallo

spacing

Ansification plus some minor knf. No binary change on i386 and
sparc64, binary change in lex.o on macppc due to introduction of
dopprompt() prototype. ok millert@

spacing

deregister

Get rid of #ifdef KSH since we don't care about building a V7 style sh and
the #ifdef KSH code is required to make a POSIX sh. From Matthias Kilian

Remove unused OS dependent #ifdef blocks, #defines and macro abstraction.
First step in making the ksh code easier to read. From Matthias Kilian

Fix three off-by-one errors. ok espie@, millert@, miod@