Hi Olaf,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v4.17-rc4]
[cannot apply to next-20180509]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Gabriel-Krisman-Bertazi/NLS-refactor-and-UTF-8-normalization/20180509-190115
config: i386-allmodconfig (attached as .config)
compiler: gcc-7 (Debian 7.3.0-16) 7.3.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

>> make[3]: *** No rule to make target 'fs/nls/ucd/*.txt', needed by 'fs/nls/utf8data.h'.
   make[3]: Target '__build' not remade because of errors.

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