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/crawler.c

@@ -170,7 +170,7 @@ static size_t follow_links(CURLM *multi, struct memory *mem,
   return count;
 }
 
-static int is_html(char *ctype)
+static int is_html(const char *ctype)
 {
   return ctype != NULL && strlen(ctype) > 10 && strstr(ctype, "text/html");
 }

docs/examples/ftpuploadfrommem.c

@@ -48,7 +48,7 @@ struct WriteThis {
 static size_t read_cb(char *ptr, size_t size, size_t nmemb, void *userp)
 {
   struct WriteThis *upload = (struct WriteThis *)userp;
-  size_t max = size*nmemb;
+  size_t max = size * nmemb;
 
   if(max < 1)
     return 0;

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;
 }

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)

docs/examples/headerapi.c

@@ -33,7 +33,7 @@ static size_t write_cb(char *data, size_t n, size_t l, void *userp)
   /* take care of the data here, ignored in this example */
   (void)data;
   (void)userp;
-  return n*l;
+  return n * l;
 }
 
 int main(void)

docs/examples/http2-upload.c

@@ -88,7 +88,7 @@ struct input {
   int num;
 };
 
-static void dump(const char *text, int num, unsigned char *ptr,
+static void dump(const char *text, int num, const unsigned char *ptr,
                  size_t size, char nohex)
 {
   size_t i;

docs/examples/multi-debugcallback.c

@@ -34,7 +34,7 @@
 
 #define TRUE 1
 
-static void dump(const char *text, FILE *stream, unsigned char *ptr,
+static void dump(const char *text, FILE *stream, const unsigned char *ptr,
                  size_t size, char nohex)
 {
   size_t i;