pull up r19290 from trunk

pull up r19290 from trunk

 r19290@cathode-dark-space:  jaltman | 2007-03-27 09:46:13 -0400
 ticket: new
 subject: WIX installer stores WinLogon event handler under wrong registry value
 tags: pullup
 component: windows

 	The WinLogon event handler in prior versions of the Wix installer
 	has been installing the event handler under the registry value "KFWLogon"
 	which happens to be the name that "OpenAFS" also uses for its Kerberos
 	logon events.   The KFW NSIS installer has used "MIT_KFW" in order to
 	avoid the conflict.  The Wix installer is being corrected to match.

 	When there is a name collision, only one of the event handlers gets
 	installed.  As a result, Kerberos FILE ccaches get created with SYSTEM
 	only ACLs and are never destroyed.  This is the same problem that
 	happens on Windows Vista when integrated logon is used because the
 	event handler hooks do not exist.

ticket: 5491
version_fixed: 1.6.1

git-svn-id: svn://anonsvn.mit.edu/krb5/branches/krb5-1-6@19339 dc483132-0cff-0310-8789-dd5450dbe970