Added my name to the list.

[SVN r22736]

more/blanket-permission.txt

@@ -11,4 +11,4 @@ Dave Moore (dmoore -at- viefinancial.com) (See Boost list message of 18 Dec 2003
 John Maddock (john - at - johnmaddock.co.uk)
 Gary Powell (powellg - at - amazon.com) (See Boost list message of 10 Feb 2004 14:22:46 -0800) 
 Fernando Cacciola (fernando_cacciola@ciudad.com.ar)
-
+Michael Glassford (glassfordm - at - hotmail.com)