StdOut Unicode support, controlled by /OUTPUTCHARSET and/or existing BOM if redirected.


git-svn-id: https://nsis.svn.sourceforge.net/svnroot/nsis/NSIS/trunk@6350 212acab6-be3b-0410-9dea-997c60f758d6
Allow /INPUTCHARSET early on the command line.


git-svn-id: https://nsis.svn.sourceforge.net/svnroot/nsis/NSIS/trunk@6351 212acab6-be3b-0410-9dea-997c60f758d6