IconSaver: add authors to authors list

…already in copyright statements

Pairs: store vector icons, new size menu

* Search for vector icons from MIME database once at start,
limit to application super-type, this fulfills a TODO in the code
* Use a std::map keyed by a hash to avoid duplicate icons
eliminating _HasBitmap()
* Store the vector representation and then only build bitmaps
when needed
* Convert uses of int to int32
* Convert from using BList to BObjectList, simplified cleanup
* Rename variables and methods to not abbreviate/be more clear
e.g. fPosX, fPosY => fPositionX, fPositionY
e.g. _GenerateCardPos() => _GenerateCardPositions()
* Renamed PairsTopButton to PairsButton
* Integrate Size submenu into New menu item.
Size menu item goes away, you can select New to get a new game at
the current difficulty, or, you can drill down in the New menu to
choose from Beginner, Intermediate, or Expert.
* Add new Size menu to set the icon size: Small (32x32), Medium (64x64),
or Large (128x128). Default is medium
* Rename MENU_SIZE message constant to MENU_DIFFICULTY for clarity
* Eliminate PairsGlobal.h, distribute constants to appropriate files.

IconSaver: add authors to authors list

…already in copyright statements

Pairs: store vector icons, new size menu

* Search for vector icons from MIME database once at start,
limit to application super-type, this fulfills a TODO in the code
* Use a std::map keyed by a hash to avoid duplicate icons
eliminating _HasBitmap()
* Store the vector representation and then only build bitmaps
when needed
* Convert uses of int to int32
* Convert from using BList to BObjectList, simplified cleanup
* Rename variables and methods to not abbreviate/be more clear
e.g. fPosX, fPosY => fPositionX, fPositionY
e.g. _GenerateCardPos() => _GenerateCardPositions()
* Renamed PairsTopButton to PairsButton
* Integrate Size submenu into New menu item.
Size menu item goes away, you can select New to get a new game at
the current difficulty, or, you can drill down in the New menu to
choose from Beginner, Intermediate, or Expert.
* Add new Size menu to set the icon size: Small (32x32), Medium (64x64),
or Large (128x128). Default is medium
* Rename MENU_SIZE message constant to MENU_DIFFICULTY for clarity
* Eliminate PairsGlobal.h, distribute constants to appropriate files.