amd64: Remove unnecessary amd64_common_transform module
ia32: when aligning we always need an IncSP after a call
redo fix for Proj(Start) being in the wrong block after part_block()
irmemory: Do not use ir_sc_parameter for parameters

ir_sc_parameter is for addresses of parameters, parameters themselfes
may point to anything.
This fixes firm-testsuite/opt/fehler110.c + fehler271.c
remove unused function is_arg_Proj()