CWG1466 Visible sequences of side effects are redundant.
CWG1673 NB CA-5 Clarifying overload resolution for the second step of copy-initialization.
CWG1759 NB GB-1 UTF-8 code units in plain char.
CWG1786 NB GB-4 Effect of merging allocations on memory leakage.
CWG 1787 NB GB-2 Uninitialized unsigned char values.

Removed second and subsequent references to [basic.fundamental] for
definition of unsigned narrow character type.