Fix output per bug #16412 (Events: SHOW PRIVILEGES gives incorrect information)

WL#1034 (Internal CRON)

mysql-test/r/grant.result

@@ -448,7 +448,7 @@ Create view	Tables	To create new views
 Create user	Server Admin	To create new users
 Delete	Tables	To delete existing rows
 Drop	Databases,Tables	To drop databases, tables, and views
-Event	Server Admin	Creation, alteration, deletion and execution of events.
+Event	Server Admin	To create, alter, drop and execute events
 Execute	Functions,Procedures	To execute stored routines
 File	File access on server	To read and write files on the server
 Grant option	Databases,Tables,Functions,Procedures	To give to other users those privileges you possess

sql/sql_show.cc

@@ -247,7 +247,7 @@ static struct show_privileges_st sys_privileges[]=
   {"Create user", "Server Admin",  "To create new users"},
   {"Delete", "Tables",  "To delete existing rows"},
   {"Drop", "Databases,Tables", "To drop databases, tables, and views"},
-  {"Event","Server Admin","Creation, alteration, deletion and execution of events."},
+  {"Event","Server Admin","To create, alter, drop and execute events"},
   {"Execute", "Functions,Procedures", "To execute stored routines"},
   {"File", "File access on server",   "To read and write files on the server"},
   {"Grant option",  "Databases,Tables,Functions,Procedures", "To give to other users those privileges you possess"},