- Patch #245115 by kkaefer, John Morahan, JohnAlbin et al: after a long discussion we've decided to make the concatenation operator consistent with the other operators.

#202925 report by beholder, patch by myself: (notice fix) only consider languages with a host set when comparing with the current host in domain language negotiation

 - whitespaces at end of lines
 - indentation
 - control structure usage
 - whitespace in empty lines
 - phpdoc comment formatting

#196410 report by daniel.soneira, patch by myself, tested by Freso: several fixes to url() generation and path aliasing, fixing path aliases for node paths and front page links in themes

#194743 by myself, reported and tested by Murz: the base URL was not properly modified for outgoing links to different language domains and path aliases were not handled in the target language

#194743 report by Murz, patch by myself: in domain language negotiation mode, we should tell url() that we built an external URL, not that we need an absolute URL built by url()

- Patch #144634 by chx: fixed critical bug that prevented language negotiation to work after/when drupal_goto() is called.

#173274 by Desbeers: treat <front> as the empty path, when adding path prefixes, so we get the proper result

#158452 by kenji_kun, patch by myself: GET['q'] might not be defined at the language bootstrap phase

Leftover variable name spotted by Amr Mostafa, reported by email (because 'the fix is too small and trivial to submit an issue')