More coding standard changes.

git-svn-id: https://arcgritt.unfuddle.com/svn/arcgritt_raytracer@59 cf0ebd01-9f19-422a-b000-9dc8f2ecb149
Removed trunk folder
Removed unneccessary libSDLmain dependency. Fixed compile error in Colour.cpp on 64-bit Linux. Fixed run-time error on 64-bit Linux. Replaced some iterators with const_iterators. Code cleanup.
Formatted *.h and *.cpp using ./astyle --style=attach -CSKNLYEj --align-pointer=type
Fixed memory leak by using boost::shared_ptr for storing scene objects. Fixed another memory leak. Removed uses of the word 'new' from comments.