* Replace illegal file system characters when reading legacy libraries to
prevent FPID parsing errors and allow saving to PRETTY file format.
* Create validator to filter illegal file system characters from footprint
name text edit controls to prevent issues when saving to PRETTY file format.
* Add missing source file licenses and some minor coding policy fixes.
* Use version of DateAndTime that returns a wxString and delete the
version that takes a char* as it is no longer required.
* Merge StrNumICmp() and StrLenNumICmp() into StrLenNumCmp() to create a
single function for comparing strings with integers and remove a lot
of duplicate code.
* Remove unused strupper from string.cpp.
* Use wxArrayString for sorting the EDA_LIST_DIALOG contents.
maciej.
jean-pierre charras
Wayne Stambaugh
Dick Hollenbeck
stambaughw