Update for WiX 2.1 installer


To generate a diff of this commit:



	cvs diff -r1.5 -r1.6 krb5/src/windows/installer/wix/ChangeLog
	cvs diff -r1.4 -r1.5 krb5/src/windows/installer/wix/features.wxi
		krb5/src/windows/installer/wix/files.wxi
	cvs diff -r1.1 -r1.2 krb5/src/windows/installer/wix/lang/ChangeLog
		krb5/src/windows/installer/wix/lang/strings_1033.wxl