tidy-up: miscellaneous

- apply more clang-format.
- lib/version: use `CURL_ARRAYSIZE()`.
- INSTALL-CMAKE.md: sync-up an option description with others.
- examples: delete unused main args.
- examples/ftpgetinfo: document `_CRT_SECURE_NO_WARNINGS` symbol.
- delete remaining stray duplicate lines.
- acinclude.m4: drop an unnecessary x-hack.
- vtls/mbedtls: join a URL split into two lines.
- src/tool_cb_see: add parentheses around macro expressions.
- src/tool_operate: move literals to the right side of comparisons.
- libtests: sync up fopen/fstat error messages between tests.
- curl_setup.h: replace `if ! defined __LP64` with `ifndef __LP64`.
  I assume it makes no difference on Tandem systems, as the latter form
  is already used in `include/curl/system.h`.

Closes #20018

src/tool_paramhlp.c

@@ -306,10 +306,18 @@ ParameterError secs2ms(long *valp, const char *str)
 {
   curl_off_t secs;
   long ms = 0;
-  const unsigned int digs[] = { 1, 10, 100, 1000, 10000, 100000,
-    1000000, 10000000, 100000000 };
-  if(!str ||
-     curlx_str_number(&str, &secs, LONG_MAX / 1000 - 1))
+  const unsigned int digs[] = {
+    1,
+    10,
+    100,
+    1000,
+    10000,
+    100000,
+    1000000,
+    10000000,
+    100000000
+  };
+  if(!str || curlx_str_number(&str, &secs, LONG_MAX / 1000 - 1))
     return PARAM_BAD_NUMERIC;
   if(!curlx_str_single(&str, '.')) {
     curl_off_t fracs;