tree-wide: Assorted spelling fixes

In particular, several occurances of funny versions of 'success',
'unknown', 'therefore', 'acknowledge', 'argument', 'achieve', 'address',
'beginning', 'desirable', 'separate' and 'necessary' are fixed.

Signed-off-by: Daniel Mack <daniel@caiaq.de>
Cc: Joe Perches <joe@perches.com>
Cc: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

drivers/net/wimax/i2400m/usb.c

@@ -246,7 +246,7 @@ error_kzalloc:
  *
  * The device will be fully reset internally, but won't be
  * disconnected from the USB bus (so no reenumeration will
- * happen). Firmware upload will be neccessary.
+ * happen). Firmware upload will be necessary.
  *
  * The device will send a reboot barker in the notification endpoint
  * that will trigger the driver to reinitialize the state
@@ -257,7 +257,7 @@ error_kzalloc:
  *
  * The device will be fully reset internally, disconnected from the
  * USB bus an a reenumeration will happen. Firmware upload will be
- * neccessary. Thus, we don't do any locking or struct
+ * necessary. Thus, we don't do any locking or struct
  * reinitialization, as we are going to be fully disconnected and
  * reenumerated.
  *