tidy-up: miscellaneous

- schannel: delete superfluous parenthesis.
- tftp: delete stray space from log output.
- ws: update guard comment.
- docs/examples: constify variables.
- runtests/servers: enclose unknown parameter between quotes.
- scripts/perlcheck.sh: drop redundant grep `-E` option.
- THANKS: move names from comments to THANKS.
- sync `--depth` option style across scripts.
- sync git repo URL ending between some scripts.
- BINDINGS.md: drop protocol from archive.org URL path.
- whitespace, indent, unfold lines.

Closes #19565

docs/examples/ftpuploadresume.c

@@ -39,7 +39,7 @@ static size_t getcontentlengthfunc(void *ptr, size_t size, size_t nmemb,
 
   r = sscanf(ptr, "Content-Length: %ld\n", &len);
   if(r == 1)
-    *((long *) stream) = len;
+    *((long *)stream) = len;
 
   return size * nmemb;
 }