VERSIONS: list all past releases

This document now lists all previous releases.

This allows us to verify that documentation refers to actual release
versions.

Test 971 now verifies options-in-versions and all command line options
documentation individually. Fixed a few discrepancies.

Test 1488 verifies libcurl options "Added-in" to exist. Fixed a few
discrepancies there as well.

Closes #16907

docs/libcurl/curl_global_trace.md

@@ -9,7 +9,7 @@ See-also:
   - libcurl (3)
 Protocol:
   - All
-Added-in: 8.3
+Added-in: 8.3.0
 ---
 
 # NAME

docs/libcurl/curl_version_info.md

@@ -8,7 +8,7 @@ See-also:
   - curl_version (3)
 Protocol:
   - All
-Added-in: 7.10.0
+Added-in: 7.10
 ---
 
 # NAME

docs/libcurl/symbols-in-versions

@@ -110,7 +110,7 @@ CURL_READFUNC_PAUSE             7.18.0
 CURL_REDIR_GET_ALL              7.19.1
 CURL_REDIR_POST_301             7.19.1
 CURL_REDIR_POST_302             7.19.1
-CURL_REDIR_POST_303             7.25.1
+CURL_REDIR_POST_303             7.26.0
 CURL_REDIR_POST_ALL             7.19.1
 CURL_RTSPREQ_ANNOUNCE           7.20.0
 CURL_RTSPREQ_DESCRIBE           7.20.0
@@ -537,7 +537,7 @@ CURLKHTYPE_RSA                  7.19.6
 CURLKHTYPE_RSA1                 7.19.6
 CURLKHTYPE_UNKNOWN              7.19.6
 CURLM_ABORTED_BY_CALLBACK       7.81.0
-CURLM_ADDED_ALREADY             7.32.1
+CURLM_ADDED_ALREADY             7.33.0
 CURLM_BAD_EASY_HANDLE           7.9.6
 CURLM_BAD_FUNCTION_ARGUMENT     7.69.0
 CURLM_BAD_HANDLE                7.9.6