use_find_cache: add another pattern

cd ${LOCAL_PATH} ; find -L $1 -name "*.java" -and -not -name ".*"

fix a bug to scan find cache
  dir
  dir-x
  dir/foo

find from dir should detect dir and dir/foo and should not stop
at dir-x.

% time ./repo/android.sh kati -c > /dev/null
find: `dummy': No such file or directory
find: `dummy': No such file or directory
fatal: Not a git repository: 'packages/apps/Camera2/.git'
./repo/android.sh kati -c > /dev/null  35.43s user 44.23s system 132% cpu 1:00.14 total
% time ./repo/android.sh kati -c -use_find_cache > /dev/null
fatal: Not a git repository: 'packages/apps/Camera2/.git'
./repo/android.sh kati -c -use_find_cache > /dev/null  32.02s user 17.76s system 146% cpu 33.947 total
2 files changed