The opcode list was a member of irprog before which wasn't really
handled consistently. Also make sure opcodes are properly freed at
ir_finish().

So we are not forced to use the generic be_Spill, be_Reload functions
which don't work correctly with double-width register requirements.
This should really fix sparc float spill/reload this time.

[r27749]

refactoring: set_frame_entity is a special callbacks for users of the advanced spillslot coalescing interface and not a generic bearch callback thingy anymore

[r27736]

[r27723]

[r27687]

[r27653]

[r26778]

[r26720]

[r26645]

- Introduced be_Start which is now used instead of iro_Start+be_RegParams
- further cleanups and fixes along the way

[r26549]

	* benodes store the out register requirements in backend_info now
	  (this is work towards killing the register_requirement callbacks)
	* ir_graph has a pointer to beirg now
	* Other cleanups

[r26540]

[r26535]

- make phi nodes use backend_info instead of phi_handler hashmaps

[r26332]

- SymConst's are now ALWAYS placed in the start block

[r26236]

[r25379]

	Node flags and node registers are stored in a generic backend_info struct now
	instead of every part of the backend doing custom (and slow) stuff

[r23142]

[r22889]

Remove the unused attribute const arch_env_t *arch_env from struct phi_handler and also the then unused parameter be_main_env_t *env from be_phi_handler_new().

[r22758]

[r22740]

[r22739]

[r22734]

[r22732]

[r22715]

- removed arch_irn_handler stuff

[r19738]

[r19733]

greater function...

[r19732]

[r19715]

- simplified be_node_classify()

[r19711]