cleanup, use C99
irarch: cleanup, use C99
improve documentation of some mtp_properties
cleanup, use C99
ia32: improve Div codeselection in presence of Pins
irarch: Simplify condition.
Improved readability.
Improved local optimization.

This enables the optimization (a + 0x80000000) & a -> a & 0x7FFFFFFF.
Improve is_Eor_Add by using bit information.

This enables the optimization (a & 0x80000000) + a -> a & 0x7FFFFFFF.
TEMPLATE: cleanup
cleanup, use C99
arm: cleanup, use C99
arm: avoid abihelper in favor of specific arm_Start/arm_Return node
benode: remove unused setup_stackframe/destroy_stackframe attributes
abihelper: remove now unused prolog/epilog helpers
arm: perform prolog/epilogue lowering
arm has a modulo_shift of 256
improve is_oversize_shift handling
arm: fix taking address of parameters
arm: rewrite+fix bic matching