makekernel,mkcopyleft: Compile inside an hidden ".build" path
makekernel,mkcopyleft: Compile inside an hidden ".build" path

 * Use .build instead of out to avoid git detection.
 * Follows 34dfe38b27b9d9d3ad174d9cff343453f09b4e48

Change-Id: I6c0bd88361d98dd1c9e787e185daadc91414b353
Signed-off-by: Adrian DC <01fb3892f39957945220431e7409156544d2f041@gmail.com>

AdrianDC/android_development_shell_tools,AdrianDC/android_development_shell_tools