CodeSnip Old Code (SVN)

Added handling for likely write errors that shouldn't be treated as bugs.
Corrected read error handling.

Fixed bug in TSelectionFileReader.Parse.

Fixed file reader error handling
* now detects and reports encoding and file read errors correctly;
* bug in file format error detection fixed.

New units that manage new stored selection search: USelectionIOHandler handles reading and writing selections from and to files while USelectionIOMgr.pas manages user interaction to open and save files.