* Changed default value for copymin_heur zu co2
* Added more check functions for the ifg

fixed indent

fixed indents
respect dump flag settings

register allocator returns now struct with times of single phases

fixed indents

typo fixed

We might have Phi-Arguments that should not be consider in register allocation (like unknwons), don't try to place reloads for them

* Added function to check if an ir_node of the ifg is also in the current irg
  (in be_ifg_check_sorted)
* Changed ifdefs linux to ifdefs __linux__

in registers. For these backing stores are added.
Note that some architecture requiere additional code to place the backing store to the right place.

added be_ifg_check_performance() to check speed and memory needed for the creation and the usage of the four ifg variants std, list, clique and pointer