[core] Converted nonnull_encoding_name() from dodgy function into a more elegant macro.  This also helps problems the function had with allocating memory correctly.  Many thanks to leo++ for the solution!
[core] Converted nonnull_encoding_name() from dodgy function into a more
elegant macro.  This also helps problems the function had with allocating
memory correctly.  Many thanks to leo++ for the solution!


git-svn-id: 6e74a02f85675cec270f5d931b0f6998666294a3@22563 d31e2699-5ff4-0310-a27c-f18f2fbe73fe

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