- Compound type selection is performed with Member
- Array indexing is performed with Sel
- Instead of the simpleSel constructor functions you can use the normal Member
  constructors now
- The concept of array element entities has been removed, Sel nodes just
  contain a pointer to the array type now.

This can be used to effectively test aliasing in libfirm.

This removes the strange entity/type duality and we get rid of union symconst_symbol.

No need to do it in backend preparation phase, if some backends destroy
the property again before transformation.

CopyB is normally used to transfer data on the stack or to enable compound
value calling conventions. Exceptions don't happen in these cases.

The backends which support rotl now match for or(shl,shr) patterns.

It has been empty for nearly all systems. People who used to put stuff
in config.h can still create a config.h on their own and inject
-include (gcc) or /FI (msvc) into their CPPFLAGS.

The builtin can be used to generate fast code for unsigned division by constant.

Code generation is supported for the IA32 and the SPARC backend.
Since our ARM backend currently has no Add with Carry instruction,
the builtin is currently not supported on Arm.
The same holds for the AMD64 backend, which does not support a division yet.

Just state the copyright and the project the files belong to. You can
then find the COPYING file for the whole project.

cleanup: Remove pointless assert(is_${NODE}(x)) just before get_${NODE}_${FOO}(x), which do the same assert.