rm src before test installed
use xargs to exit non-zero if test failed, rm build for test
fix conflict
show rostest results
use install_manifest.xml to copy files under devel to install, not to overwrite existing files (ex, openrtm-aist.pc with path modification) by copying entire directory
Merge pull request #17 from k-okada/master

use xargs to exit non-zero if test failed, rm build for test