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

scripts/mk-ca-bundle.pl

@@ -357,7 +357,7 @@ if(!$opt_n) {
             report "LWP is not available (LWP::UserAgent not found)";
             exit 1;
         }
-        my $ua  = new LWP::UserAgent(agent => "$0/$version");
+        my $ua = new LWP::UserAgent(agent => "$0/$version");
         $ua->env_proxy();
         $resp = $ua->mirror($url, $txt);
         if($resp && $resp->code eq '304') {

scripts/perlcheck.sh

@@ -42,7 +42,7 @@ echo "parallel: ${procs}"
   elif git rev-parse --is-inside-work-tree >/dev/null 2>&1; then
     {
       git ls-files | grep -E '\.(pl|pm)$'
-      git grep -l -E '^#!/usr/bin/env perl'
+      git grep -l '^#!/usr/bin/env perl'
     } | sort -u
   else
     # strip off the leading ./ to make the grep regexes work properly