iropt: Use get_commutative_other_op() in a - (a & y) = a & ~y.
lower_dw: Do not just move a node itself to the new block, but all its Projs, too.
irgmod: Correct typos in comments.
irnode: Add and use get_Const_long().
Cleanup, use C99.
arm: Give some node operands a name.
lower_alloc: simplify code+interface, fix ia32 lower_alloc invocation
add missing lower_alloc call
ia32: rename stack_alignment to po2_stack_alignment
be: Use a loop instead of N calls to pre-transform anchor inputs.
be: Remove old anchor from be_transform_env_t.
be: Remove irg from be_transform_env_t.
irgraph: Remove set_irg_anchor().
be: Remove pointless null pointer tests.

The operands of the anchor cannot be null.