Release v2.16.1.1

The following are the changes in this release:

Fix compiler warning for `custom/u_pfe.c`.

Update the `ARCH_CFLAGS` make symbol comments in `Makefile.config`.

Add `ARCH_CFLAGS` to `COMMON_CFLAGS` in `Makefile.config`.

Add "RHEL (Linux) Address Sanitizer (ASAN) for i686" commented out
section to `Makefile.local`.

Improve comments in `Makefile.local` related to "Address Sanitizer (ASAN)".

Add `junk4200` to `.gitignore`.

Use `-${Q}` instead of `-@` while build hsrc files in `Makefile`.

Fix `pseudo_seed()` in `seed.c` to handle 32-bit architectures.

Fixed `reopenid()` in `file.c` to handle 32-bit architectures and
to avoid "glibc detected an invalid stdio handle" using `freopen(3)`.

Fixed bug in `c_power()` in `comfunc.c` that caused 32-bit
architectures to dump core.

Fixed bug in `zrandom()` in `zrandom.c` where results from a
Blum-Blum-Shub operation were incorrectly copied into a ZVALUE
for 32-bit architectures.

Fixed comment typo in `cal/regress.cal` before test 5305.