This is needed or no EAX will be allocated.

handle binops with two identical operands
add simulation for be_Return
fixed simulation for be_Copy
add register killing code at begin of every block
use node index as block number
create only labels for block that are jump targets

fixed empty comments

renamed register classes

removed unused XXX registers

modified scheduler

changed name prefix for SSE floating point nodes from f to x

comments added

creates a CopyKeep to prevent the usage of esp before it is copied to ebp
ia32_isa_t structure now includes the arch_isa_t (real derivation)

a be_return feven if there was none (as it happens in endless loops)

Moved the initial IncSP before teh Barrier. This prevents spilling (which uses fp)
to be done before sp is increased, arghhh