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/ghiper.c

@@ -430,9 +430,9 @@ int init_fifo(void)
 int main(void)
 {
   struct GlobalInfo *g = g_malloc0(sizeof(struct GlobalInfo));
-  GMainLoop*gmain;
+  GMainLoop *gmain;
   int fd;
-  GIOChannel* ch;
+  GIOChannel *ch;
 
   CURLcode res = curl_global_init(CURL_GLOBAL_ALL);
   if(res)