Log Message:
Update to 4.1.5:

Sed 4.1.5

* fix parsing of a negative character class not including a closed bracket,
  like [^]] or [^]a-z].

* fix parsing of [ inside an y command, like y/[/A/.

* output the result of commands a, r, R when a q command is found.

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Sed 4.1.4

* \B correctly means "not on a word boundary" rather than "inside \ 
a word"

* bugfixes for platform without internationalization

* more thorough testing framework for tarballs (`make full-distcheck')

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Sed 4.1.3

* regex addresses do not use leftmost-longest matching.  In other words,
  /.\+/ only looks for a single character, and does not try to find as
  many of them as possible like it used to do.

* added a note to BUGS and the manual about changed interpretation
  of `s|abc\|def||', and about localization issues.

* fixed --disable-nls build problems on Solaris.

* fixed `make check' in non-English locales.

* `make check' tests the regex library by default if the included regex
  is used (regex tests had to be enabled separately up to now).

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Sed 4.1.2

* fix bug in 'y' command in multi-byte character sets

* fix severe bug in parsing of ranges with an embedded open bracket

* fix off-by-one error when printing a "bad command" error