Enable Int64 on Unicode. Did a ROPS fix for this.
Added StrToInt64Def to ROPS.
Update documentation.
Merge branch 'refs/heads/master' into int64

Conflicts:
	whatsnew.htm
Typo fixes.
Fixed Low/High/Inc/Dec on Int64.
Add GetSpaceOnDisk64.
Merge pull request #38 from jrsoftware/int64

Add Int64 support