CP_ACP (defaultsystemcodepage), because if all input strings have the
same code page then the result should also have that code page if it's
assigned to a rawbytestring rather than getting defaultsystemcodepage
* do not consider empty strings to determine the code page of the result
in fpc_AnsiStr_Concat_multi(), because that will cause a different
result than when using a sequence of fpc_AnsiStr_Concat() calls (it
ignores empty strings to determine the result code page) and it's also
slower
* do not consider the run time code page of the destination string in
fpc_AnsiStr_Concat(_multi)() because Delphi does not do so either. This
was introduced in r19118, probably to hide another bug
+ test
git-svn-id: branches/cpstrrtl@25143 -
