lib: fix some loose ends for recently added CURLSSLOPT_NO_PARTIALCHAIN

Add support for CURLSSLOPT_NO_PARTIALCHAIN in CURLOPT_PROXY_SSL_OPTIONS
and OS400 package spec.

Also I added the option to the NameValue list in the tool even though it
isn't exposed as a command-line option (...yet?). (NameValue stringizes
the option name for the curl cmd -> libcurl source generator)

Follow-up to 564d88a which added CURLSSLOPT_NO_PARTIALCHAIN.

Ref: https://github.com/curl/curl/pull/4655

lib/setopt.c

@@ -2142,6 +2142,7 @@ CURLcode Curl_vsetopt(struct Curl_easy *data, CURLoption option, va_list param)
     data->set.proxy_ssl.enable_beast =
       (bool)((arg&CURLSSLOPT_ALLOW_BEAST) ? TRUE : FALSE);
     data->set.proxy_ssl.no_revoke = !!(arg & CURLSSLOPT_NO_REVOKE);
+    data->set.proxy_ssl.no_partialchain = !!(arg & CURLSSLOPT_NO_PARTIALCHAIN);
     break;
 #endif
 

packages/OS400/curl.inc.in

@@ -760,6 +760,8 @@
      d                 c                   X'0001'
      d CURLSSLOPT_NO_REVOKE...
      d                 c                   X'0002'
+     d CURLSSLOPT_NO_PARTIALCHAIN...
+     d                 c                   X'0004'
       *
      d CURL_HET_DEFAULT...
      d                 c                   200

src/tool_setopt.c

@@ -124,6 +124,7 @@ const NameValue setopt_nv_CURLUSESSL[] = {
 const NameValueUnsigned setopt_nv_CURLSSLOPT[] = {
   NV(CURLSSLOPT_ALLOW_BEAST),
   NV(CURLSSLOPT_NO_REVOKE),
+  NV(CURLSSLOPT_NO_PARTIALCHAIN),
   NVEND,
 };