[PATCH] gpt.8: add suffixes known by dehumanize_number

[tlaronde%kergis.com@localhost]

Here is a small diff to add the suffixes known by dehumanize_number
when specifying a size and saying that the suffix is case insensitive.
-- 
        Thierry Laronde <tlaronde +AT+ kergis +dot+ com>
                     http://www.kergis.com/
                    http://kertex.kergis.com/
Key fingerprint = 0FF7 E906 FBAF FE95 FD89  250D 52B1 AE95 6006 F40C

diff --git a/sbin/gpt/gpt.8 b/sbin/gpt/gpt.8
index d13782285fd..2445722fa2a 100644
--- a/sbin/gpt/gpt.8
+++ b/sbin/gpt/gpt.8
@@ -160,7 +160,7 @@ or
 .Sq S
 then size is in sectors, otherwise size is in bytes which must be
 a multiple of the device's sector size.
-Accepted suffix units are
+Accepted suffix units (case insensitive) are
 .Sq b
 to denote bytes,
 .Sq k
@@ -168,7 +168,13 @@ to denote kilobytes,
 .Sq m
 to denote megabytes and
 .Sq g
-to denote gigabytes.
+to denote gigabytes,
+.Sq t
+to denote terabytes,
+.Sq p
+to denote petabytes, and
+.Sq e
+to denote exabytes.
 The minimum size is 1 sector.
 .Pp
 The