- some code cleanup
- avoids the case where 2 dumpers are registered

- save ir_node* instead of irn_idx in the map (saves irn_idx_map
  lookups)
- in liveness_transfer check register class on the inputs (which is
  cheaper) and only then check the operand

So all files in libFirm do this consistently

This also plugs liveness related memory leaks

[r28127]

[r27924]

[r27693]

[r23613]

[r22889]

[r17143]

[r15733]

It gets a beirg not an irg anymore

[r15560]

Fixed a bug in liveness

[r14701]

  - The liveness in the birg stays always the same
  - Invalidation is done with be_liveness_invalidate()
  - Each algo has to specify if it needs only liveness checks
      be_liveness_assure_chk()
    or the complete liveness sets for use with be_lv_foreach, etc.
      be_liveness_assure_sets()

* Adapted all the files to these changes
* made bessadestr.c liveness updating

[r14506]

unified .h #ifndef ... #define ...
changed some indenting
removed some unused code
removed beuses_t.h as unused header

[r13559]

[r13508]

[r12663]

- Replace limit callback in register requirements with a simple bitset
- Fix backends, generators and the rest of the code for the change register
  requirements structure
- Eliminated the custom register_requirement structures in the backend, they
  are pointless now, use the normal arch_register_req_t
- Fix TEMPLATE backend
- Extract emitter framework from ia32 and provide generic header/code for it
- Port TEMPLATE backend to new emitter
- Extract gas specific emit stuff (declarations, sections) from ia32 backend
  and provide it as generic header/code. Make TEMPLATE backend use that
- Remove several FIRM_DBG_REGISTERs from functions which are called very often.
  Before we had millions of string hashtable lookups because of that. The
  prefered way is to have 1 static debug module per file and initialize it in
  the module constructor. No passing around in environment structs and in no
  case should you dynamically register it in single functions.

- Fixes for compilation without DEBUG_libfirm
- Fixed for compilation without WITH_LIBCORE (but it's still broken)

Added becopyheur3 (need to compile firm with --enable-jvm)

Added additional live_end set for all values that are live at the end
	and not live out