This especially also fixes the problem of the copyright symbol being
represented using 0xA9, which is neither ASCII nor the appropriate UTF8
byte sequence for the copyright symbol.
PHPBB3-10881
- new method sql_multi_insert to circumvent db-specific hacks
(hopefully not introduced any parsing errors)
git-svn-id: file:///svn/phpbb/trunk@6497 89ea8834-ac86-4346-8a33-228a782c2dd0