Fix more misc spelling in MariaDB Server repository

Fix following Lintian nags:

    X: mariadb-backup: spelling-error-in-binary explicite explicit [usr/bin/mariadb-backup]
    X: mariadb-plugin-connect: spelling-error-in-binary Exeption Exception [usr/lib/mysql/plugin/ha_connect.so]

Also fix some typos in comments.

Author: ottok

extra/mariabackup/innobackupex.cc

@@ -190,7 +190,7 @@ enum innobackupex_options
 	OPT_DATABASES,
 	OPT_DECOMPRESS,
 
-	/* options wich are passed directly to xtrabackup */
+	/* options which are passed directly to xtrabackup */
 	OPT_CLOSE_FILES,
 	OPT_COMPACT,
 	OPT_COMPRESS,

extra/mariabackup/xtrabackup.cc

@@ -212,7 +212,7 @@ uint xtrabackup_compress = FALSE;
 uint xtrabackup_compress_threads;
 ulonglong xtrabackup_compress_chunk_size = 0;
 
-/* sleep interval beetween log copy iterations in log copying thread
+/* sleep interval between log copy iterations in log copying thread
 in milliseconds (default is 1 second) */
 ulint xtrabackup_log_copy_interval = 1000;
 static ulong max_buf_pool_modified_pct;

mysql-test/suite/sys_vars/r/sysvars_innodb.result

@@ -612,7 +612,7 @@ SESSION_VALUE	NULL
 DEFAULT_VALUE	OFF
 VARIABLE_SCOPE	GLOBAL
 VARIABLE_TYPE	BOOLEAN
-VARIABLE_COMMENT	Enrypt the temporary table data.
+VARIABLE_COMMENT	Encrypt the temporary table data
 NUMERIC_MIN_VALUE	NULL
 NUMERIC_MAX_VALUE	NULL
 NUMERIC_BLOCK_SIZE	NULL

storage/connect/odbconn.cpp

@@ -281,7 +281,7 @@ static CATPARM *AllocCatInfo(PGLOBAL g, CATINFO fid, PCSZ db,
 		cap->Status = (UWORD *)PlugSubAlloc(g, NULL, m * sizeof(UWORD));
 
 	} catch (int n) {
-		htrc("Exeption %d: %s\n", n, g->Message);
+		htrc("Exception %d: %s\n", n, g->Message);
 		cap = NULL;
 	} catch (const char *msg) {
 		htrc(g->Message, msg);

storage/innobase/handler/ha_innodb.cc

@@ -19749,7 +19749,7 @@ static MYSQL_SYSVAR_BOOL(immediate_scrub_data_uncompressed,
 
 static MYSQL_SYSVAR_BOOL(encrypt_temporary_tables, innodb_encrypt_temporary_tables,
   PLUGIN_VAR_OPCMDARG | PLUGIN_VAR_READONLY,
-  "Enrypt the temporary table data.",
+  "Encrypt the temporary table data",
   NULL, NULL, false);
 
 static struct st_mysql_sys_var* innobase_system_variables[]= {