cleanup: sql_alloc.h grant.h, privilege.h include what you use

sql/grant.h

@@ -19,6 +19,8 @@
 
 #include "lex_string.h"
 #include "privilege.h"
+#include "sql_lex.h"
+#include "sql_list.h"
 
 class LEX_COLUMN;
 class Lex_ident_sys;

sql/privilege.h

@@ -17,6 +17,7 @@
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335  USA */
 
 #include "my_global.h" // ulonglong
+#include "my_bit.h"
 
 
 /*

sql/sql_alloc.h

@@ -16,7 +16,8 @@
    along with this program; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */
 
-#include <my_sys.h>                    /* alloc_root, MEM_ROOT, TRASH */
+#include <my_global.h>                 /* _current_thd, TRASH_FREE */
+#include <my_sys.h>                    /* alloc_root */
 
 /* MariaDB standard class memory allocator */