...but only if there isn't already a krb5.ini in the WindowsFolder.

Signed-off-by: Kevin Wasserman <kevin.wasserman@painless-security.com>

https://github.com/krb5/krb5/commit/a94a32fdff046db472dbab40d276b92d210b0be2
Commit By: tlyu
Revision: 25573
Changed Files:
U   trunk/src/windows/installer/wix/features.wxi
U   trunk/src/windows/installer/wix/files.wxi