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_writeout_json.c

@@ -34,8 +34,7 @@
 
    Return 0 on success, non-zero on error.
 */
-int jsonquoted(const char *in, size_t len,
-               struct dynbuf *out, bool lowercase)
+int jsonquoted(const char *in, size_t len, struct dynbuf *out, bool lowercase)
 {
   const unsigned char *i = (const unsigned char *)in;
   const unsigned char *in_end = &i[len];