Add comment about lack of timezone compensation.
Add normalization of patient names.

This normalizes the names in terms of components and component
groups, but not yet in terms of case or accents.
Simplify name matching code via null-terminated strings.
Add case-insensitivity for matching PN.
Use case folding instead of converting to lowercase.
Fix case folding for unicode 0xD7 (multiplication).
Add case folding for greek and cyrillic.
Fix extra shift in converting utf-8 to unicode.

Found this error while testing the case folding.