update product-def-c.mk
Merge branch 'master' into refs/top-bases/t/3rdTools/argtable2
Merge commit 'refs/top-bases/t/3rdTools/regex' into t/3rdTools/regex
Merge branch 't/3rdTools/regex' into refs/top-bases/t/3rdTools/argtable2
Merge commit 'refs/top-bases/t/3rdTools/argtable2' into t/3rdTools/argtable2