https://issues.dlang.org/show_bug.cgi?id=14063

          Issue ID: 14063
           Summary: Add coverage enforcement for Phobos' posix.mak
           Product: D
           Version: D2
          Hardware: x86
                OS: Mac OS X
            Status: NEW
          Severity: enhancement
          Priority: P1
         Component: DMD
          Assignee: nobody@puremagic.com
          Reporter: andrei@erdani.com

win32.mak has -cov=nn to enforce minimum coverage levels are preserved. We should have such in posix.mak as well. Ideally we'd find a simple mechanism by which both makefiles use the same numbers.

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