Update contributors

CREDITS

 MariaDB is brought to you by the MariaDB Foundation, a non profit
 organization registered in the USA.
 
-The current main members and sponsors of the MariaDB Foundation are:
+The current main sponsors of the MariaDB Foundation are:
 
-MariaDB Corporation	http://www.mariadb.com  (2013 - 2016)
 Booking.com			http://www.booking.com (2013 - 2016)
-Parallels       	http://www.parallels.com/products/plesk  (2013 - 2016)
-Automattic              http://automattic.com  (2014 - 2016)
-Verkkokauppa.com	http://verkkokauppa.com (2015 - 2016)
-Visma			http://visma.com/ (2015 - 2016)
-Webyog			http://webyog.com (2015 - 2016)
-Wikimedia Foundation    http://wikimedia.org (2015 - 2016)
+Development Bank of Singapore   http://dbs.com (2016)
+MariaDB Corporation		https://www.mariadb.com  (2013 - 2016)
+Visma                           http://visma.com (2015 - 2016)
 Acronis                         http://acronis.com (2016)
+Nexedi				https://www.nexedi.com (2016)
+Automattic              	https://automattic.com  (2014 - 2016)
+Verkkokauppa.com		https://www.verkkokauppa.com (2015 - 2016)
+Virtuozzo                       https://virtuozzo.com (2016)
 
-For a full list of supporters and sponsors see
+For a full list of sponsors, see
 https://mariadb.org/about/supporters/
+and for individual contributors, see
+https://mariadb.org/donate/individual-sponsors/
 
-You can also do this by running SHOW CONTRIBUTORS.
+You can also get the list of sponsors by running SHOW CONTRIBUTORS.
 
-For all corporate memberships and sponsorships please contact the
+For all corporate sponsorships please contact the
 MariaDB Foundation Board via foundation@mariadb.org.
 
 The MariaDB Foundation is responsible for the MariaDB source
@@ -38,7 +40,7 @@ following services to the MariaDB community:
 To be able to do the above we need help from corporations and individuals!
 
 You can help support MariaDB by becoming a MariaDB developer or a
-member or sponsor of the MariaDB Foundation. To donate or sponsor, 
+sponsor of the MariaDB Foundation. To donate or sponsor, 
 go to https://mariadb.org/donate/
 
 You can get a list of all the main authors of MariaDB / MySQL by running 

mysql-test/r/contributors.result

 SHOW CONTRIBUTORS;
 Name	Location	Comment
-Booking.com	http://www.booking.com	Founding member of the MariaDB Foundation
-MariaDB Corporation	https://mariadb.com	Founding member of the MariaDB Foundation
-Auttomattic	http://automattic.com	Member of the MariaDB Foundation
-Visma	http://visma.com	Member of the MariaDB Foundation
-Nexedi	http://www.nexedi.com	Member of the MariaDB Foundation
-Acronis	http://www.acronis.com	Member of the MariaDB Foundation
-Verkkokauppa.com	Finland	Sponsor of the MariaDB Foundation
-Virtuozzo	https://virtuozzo.com/	Sponsor of the MariaDB Foundation
+Booking.com	http://www.booking.com	Founding member, Platinum Sponsor of the MariaDB Foundation
+MariaDB Corporation	https://mariadb.com	Founding member, Gold Sponsor of the MariaDB Foundation
+Visma   http://visma.com	Gold Sponsor of the MariaDB Foundation
+DBS	http://dbs.com	Gold Sponsor of the MariaDB Foundation
+Nexedi	https://www.nexedi.com	Silver Sponsor of the MariaDB Foundation
+Acronis	http://www.acronis.com	Silver Sponsor of the MariaDB Foundation
+Auttomattic     https://automattic.com  Bronze Sponsor of the MariaDB Foundation
+Verkkokauppa.com	https://virtuozzo.com	Bronze Sponsor of the MariaDB Foundation
+Virtuozzo	https://virtuozzo.com/	Bronze Sponsor of the MariaDB Foundation
 Google	USA	Sponsoring encryption, parallel replication and GTID
 Facebook	USA	Sponsoring non-blocking API, LIMIT ROWS EXAMINED etc
 Ronald Bradford	Brisbane, Australia	EFF contribution for UC2006 Auction

sql/contributors.h

@@ -36,17 +36,16 @@ struct show_table_contributors_st {
 */
 
 struct show_table_contributors_st show_table_contributors[]= {
-  /* MariaDB foundation members, in contribution, size , time order */
-  {"Booking.com", "http://www.booking.com", "Founding member of the MariaDB Foundation"},
-  {"MariaDB Corporation", "https://mariadb.com", "Founding member of the MariaDB Foundation"},
-  {"Auttomattic", "http://automattic.com", "Member of the MariaDB Foundation"},
-  {"Visma", "http://visma.com", "Member of the MariaDB Foundation"},
-  {"Nexedi", "http://www.nexedi.com", "Member of the MariaDB Foundation"},
-  {"Acronis", "http://www.acronis.com", "Member of the MariaDB Foundation"},
-
-  /* Smaller sponsors, newer per year */
-  {"Verkkokauppa.com", "Finland", "Sponsor of the MariaDB Foundation"},
-  {"Virtuozzo", "https://virtuozzo.com/", "Sponsor of the MariaDB Foundation"},
+  /* MariaDB foundation sponsors, in contribution, size , time order */
+  {"Booking.com", "http://www.booking.com", "Founding member, Platinum Sponsor of the MariaDB Foundation"},
+  {"MariaDB Corporation", "https://mariadb.com", "Founding member, Gold Sponsor of the MariaDB Foundation"},
+  {"Visma", "http://visma.com", "Gold Sponsor of the MariaDB Foundation"},
+  {"DBS", "http://dbs.com", "Gold Sponsor of the MariaDB Foundation"},
+  {"Nexedi", "https://www.nexedi.com", "Silver Sponsor of the MariaDB Foundation"},
+  {"Acronis", "http://www.acronis.com", "Silver Sponsor of the MariaDB Foundation"},
+  {"Auttomattic", "https://automattic.com", "Bronze Sponsor of the MariaDB Foundation"},
+  {"Verkkokauppa.com", "https://virtuozzo.com", "Bronze Sponsor of the MariaDB Foundation"},
+  {"Virtuozzo", "https://virtuozzo.com/", "Bronze Sponsor of the MariaDB Foundation"},
 
   /* Sponsors of important features */
   {"Google", "USA", "Sponsoring encryption, parallel replication and GTID"},