Lots of gcc -Wall fixes. The common ones:

- switch() statements don't handle all values in an enum
- missing \n at end of file
- non-virtual destructors in classes containing virtual functions
- order of initializers in constructor initializer lists
... some other stuff (signedness, nested comments, unused variables) as
well.

This was SVN commit r2864.

source/scripting/ScriptableObject.h

@@ -13,8 +13,6 @@
 
 #define ALLOW_NONSHARED_NATIVES
 
-static int pcount = 0;
-
 class IJSObject;
 
 class IJSProperty