testing/testcase: ignore __compile__ in ldd check

if previous test fail to build, compile dir is there for inspection. We
don't want to check binaries in there.
4 jobs for fix/testcase in 0 seconds
Status Job ID Name Coverage
  External
failed SlapOS.SoftwareReleases.IntegrationTest-Jerome-732

07:24:08

canceled SlapOS.SoftwareReleases.IntegrationTest-Jerome-732

06:32:03

failed SlapOS.SoftwareReleases.IntegrationTest-Jerome-732

06:00:50

canceled SlapOS.SoftwareReleases.IntegrationTest-Jerome-732