Iterables iXXX() removed, GLTexture--, ALSource-- ...

- ozCore
  * iterables: iXXX() function removed except iEquals()
  * arrays
    + added citer() for initialiser lists
    + removed aFind() and aFindLast()
  * EnumMap copies InitialiserList, doesn't allocate memory any more
- ozEngine
  * removed GLTexture, identicon moved to GL
  * removed ALBuffer, ALSource, ALStreamingSource since not used anywhere and
    don't fit in