fix calc for 32-bit architectures

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.

Author: lcn2

.gitignore

@@ -157,6 +157,7 @@ help/resource
 help/type
 help/usage
 .hsrc
+junk4200
 libcalc.*
 libcustcalc.*
 ll_tmp

CHANGES

@@ -1,3 +1,35 @@
+The following are the changes from calc version 2.16.1.0 to date:
+
+    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.
+
+
 The following are the changes from calc version 2.16.0.3 to 2.16.1.0:
 
     Added a new `.clang-format` file as the basis for using the