* Create a generic yes/no/cancel dialog from DIALOG_EXIT.
* Make DIALOG_EXIT return wxID_YES instead of wxID_OK so it is consistent
with the standard message dialogs.
* Add missing license to confirm.h and confirm.cpp.
* Change Eeschema message dialog when loading a schematic if the current
schematic is modified to be more consistent with the exit dialog.
* Change Pcbnew message dialog when loading a board if the current board
is modified to be more consistent with the exit dialog.
* Remove some Eeschema block debug logging code left over from my last
commit.
* 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.
Simon Wells
Wayne Stambaugh
jean-pierre charras
Fabrizio
stambaughw