tidy-up: miscellaneous

- vms/curlmsg_vms.h: delete unused/commented code.
- vtls/schannel_verify: sort includes.
- typecheck-gcc.h: fix indent and alignment.
- lib/config-win32.h: drop idle `#undef`.
- spacecheck: check for stray empty lines before after curly braces.
- make literals more readable: 1048576 -> 1024 * 1024
- scope variables.
- use ISO date in a comment.
- drop redundant parentheses.
- drop empty comments.
- unfold lines.
- duplicate/stray spaces in comments.
- fix indent, whitespace, minor typos.

Closes #20690

docs/libcurl/curl_mime_data.md

@@ -68,7 +68,7 @@ int main(void)
     /* add a part */
     part = curl_mime_addpart(mime);
 
-    /* add data to the part  */
+    /* add data to the part */
     curl_mime_data(part, "raw contents to send", CURL_ZERO_TERMINATED);
   }
 }

docs/libcurl/opts/CURLOPT_PROGRESSDATA.md

@@ -63,7 +63,7 @@ int main(void)
   if(curl) {
     struct progress data;
 
-    /* pass struct to callback  */
+    /* pass struct to callback */
     curl_easy_setopt(curl, CURLOPT_PROGRESSDATA, &data);
     curl_easy_setopt(curl, CURLOPT_PROGRESSFUNCTION, progress_callback);
 

docs/libcurl/opts/CURLOPT_PROGRESSFUNCTION.md

@@ -109,7 +109,7 @@ int main(void)
 
   CURL *curl = curl_easy_init();
   if(curl) {
-    /* pass struct to callback  */
+    /* pass struct to callback */
     curl_easy_setopt(curl, CURLOPT_PROGRESSDATA, &data);
     curl_easy_setopt(curl, CURLOPT_PROGRESSFUNCTION, progress_callback);
 

docs/libcurl/opts/CURLOPT_TLSAUTH_PASSWORD.md

@@ -41,7 +41,7 @@ option.
 Using this option multiple times makes the last set string override the
 previous ones. Set it to NULL to disable its use again.
 
-This feature relies on TLS SRP which does not work with TLS 1.3.
+This feature relies on TLS-SRP which does not work with TLS 1.3.
 
 # DEFAULT
 

docs/libcurl/opts/CURLOPT_TLSAUTH_TYPE.md

@@ -45,7 +45,7 @@ defined in RFC 5054 and provides mutual authentication if both sides have a
 shared secret. To use TLS-SRP, you must also set the
 CURLOPT_TLSAUTH_USERNAME(3) and CURLOPT_TLSAUTH_PASSWORD(3) options.
 
-TLS SRP does not work with TLS 1.3.
+TLS-SRP does not work with TLS 1.3.
 
 # DEFAULT
 

docs/libcurl/opts/CURLOPT_TLSAUTH_USERNAME.md

@@ -40,7 +40,7 @@ option.
 Using this option multiple times makes the last set string override the
 previous ones. Set it to NULL to disable its use again.
 
-This feature relies on TLS SRP which does not work with TLS 1.3.
+This feature relies on TLS-SRP which does not work with TLS 1.3.
 
 # DEFAULT
 

docs/libcurl/opts/CURLOPT_WRITEFUNCTION.md

@@ -110,7 +110,7 @@ int main(void)
   CURLcode result;
   CURL *curl = curl_easy_init();
   if(curl) {
-    /* send all data to this function  */
+    /* send all data to this function */
     curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, cb);
 
     /* we pass our 'chunk' struct to the callback function */

docs/libcurl/opts/CURLOPT_XFERINFODATA.md

@@ -65,7 +65,7 @@ int main(void)
   if(curl) {
     struct progress data;
 
-    /* pass struct to callback  */
+    /* pass struct to callback */
     curl_easy_setopt(curl, CURLOPT_XFERINFODATA, &data);
     curl_easy_setopt(curl, CURLOPT_XFERINFOFUNCTION, progress_cb);
   }

docs/libcurl/opts/CURLOPT_XFERINFOFUNCTION.md

@@ -105,7 +105,7 @@ int main(void)
   if(curl) {
     struct progress data;
 
-    /* pass struct to callback  */
+    /* pass struct to callback */
     curl_easy_setopt(curl, CURLOPT_XFERINFODATA, &data);
 
     /* enable progress callback getting called */

docs/libcurl/symbols.pl

@@ -100,6 +100,5 @@ EOS
 EOS
 ;
         }
-
     }
 }