Fix data type of UTF32 string on 64-bit systems
Fix data type of UTF32 string on 64-bit systems

long is 64-bit long on some LP64 systems

git-svn-id: df58bffb5a937f084eff32b23172f75a46061293@5442 0b15d6fc-ce89-4483-8625-0b0fabc32e25

Pointillistic/rebol-lang,zsx/r3,Pointillistic/rebol-lang,zsx/r3,zsx/r3,Pointillistic/rebol-lang,Pointillistic/rebol-lang,zsx/r3