Revert "common.mk is NOT working with /bin/sh anymore"
This reverts commit 11d3986d6557eb3cfcecbdd0ef6e21b18c7c960b.
Travis was broken by that.
Revert "common.mk is NOT working with /bin/sh anymore"
This reverts commit 11d3986d6557eb3cfcecbdd0ef6e21b18c7c960b.
Travis was broken by that.