Adding barrier and timeout in failing test test_drawImage_nonAutoScalableGC_bug_2504 due to test failing on Linux#2565

HeikoKlare merged 1 commit intoeclipse-platform:mastereclipse-platform/eclipse.platform.swt:masterfrom

vi-eclipse:arunjose696/2557/disableTestvi-eclipse/eclipse.platform.swt:arunjose696/2557/disableTestCopy head branch name to clipboard