Amendments to Unicode 7 update.

for  ChangeLog

	* include/stdc-predef.h (__STDC_ISO_10646__): Update to
	201304L, for Unicode 7.

for  localedata/ChangeLog

	* unicode-gen/ctype_compatibility.py: Use date ranges in
	copyright notice.
	* unicode-gen/ctype_compatibility_test_cases.py: Likewise.
	* unicode-gen/gen_unicode_ctype.py: Likewise.
	* unicode-gen/utf8_compatibility.py: Likewise.
	* unicode-gen/utf8_gen.py: Likewise.  Use upper case for
	global variables, use tuples for global constant arrays.  From
	Mike FABIAN.  Suggested by Mike Frysinger <vapier@gentoo.org>.