st registers are allocated by the x87 simulator and don't need a noreg

 - replace the pnc code by its R^-1 one
 - fixed CJmpAM optmization

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

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)

added UKNWN register
set Unknown nodes to ignore and assign them the UKNWN register

fixed copy insertion

fixed indents
added should be same constraint for lea
added additional statistics

added additional dbg module for am optimize

ia32_finish_irg/( now iterates over the block schedule

decls are created now last
moved entity cache to isa, so Fp constants are only created once

add comments for the supported command line options

fixed copy inserter bug
changed debugging stuff

omit copy if in==out

fixed Spill/Reload again

switched to trivial selector

code was emitted

fixed cmp with immediate
emit %cl for shift/rotate ops
fixed some minor bugs

fixed several bugs

call the block scheduler
renamed XXX registers to NO_REG

fixed emit of unary ops
fixed copy generation for should be same constraints

fixed some bugs

removed some unused variables
fixed function type