GUACAMOLE-422: Update comments on timezone settings.

src/protocols/rdp/rdp_settings.c

@@ -358,7 +358,10 @@ enum RDP_ARGS_IDX {
     IDX_PRECONNECTION_BLOB,
 
     /**
-     * The timezone to pass through to the RDP connection.
+     * The timezone to pass through to the RDP connection, in IANA format, which
+     * will be translated into Windows formats.  See the following page for
+     * information and list of valid values:
+     * https://en.wikipedia.org/wiki/List_of_tz_database_time_zones
      */
     IDX_TIMEZONE,
 

src/protocols/ssh/settings.c

@@ -249,11 +249,12 @@ enum SSH_ARGS_IDX {
     IDX_LOCALE,
      
     /**
-     * The timezone that is passed from the client system to the
+     * The timezone that is to be passed to the remote system, via the
-     * remote server, or null if not specified.  If set, and allowed
+     * TZ environment variable.  By default, no timezone is forwarded
-     * by the remote SSH server, the TZ environment variable will be
+     * and the timezone of the remote system will be used.  This
-     * set on the remote session, causing the session to be localized
+     * setting will only work if the SSH server allows the TZ variable
-     * to the specified timezone.
+     * to be set.  Timezones should be in standard IANA format, see:
+     * https://en.wikipedia.org/wiki/List_of_tz_database_time_zones
      */
     IDX_TIMEZONE,
 

src/protocols/ssh/settings.h

@@ -253,6 +253,7 @@ typedef struct guac_ssh_settings {
      * environment variable.
      */
     char* locale;
+
     /** 
      * The client timezone to pass to the remote system.
      */