Rename and move 'Clear Principal History'

Move it closer to the Principal edit box and rename to 'Clear History'

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

https://github.com/krb5/krb5/commit/baa28cb97e5129bfa4d8fed37f34d7a688c03f42
Author: Kevin Wasserman <kevin.wasserman@painless-security.com>
Committer: Ben Kaduk <kaduk@mit.edu>
Commit: baa28cb97e5129bfa4d8fed37f34d7a688c03f42
Branch: master
 src/windows/leashdll/lsh_pwd.rc |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)