Look for sccache binary in more places in system test. Should fix #37.
Look for sccache binary in more places in system test. Should fix #37.

luser/sccache2,glandium/sccache,luser/sccache2,mozilla/sccache,mozilla/sccache,glandium/sccache,glandium/sccache,mozilla/sccache,glandium/sccache,luser/sccache2,luser/sccache2