rename get_irn_deps to get_irn_n_deps
return carry bit directly instead of having an sc_had_carry() function
use ALLOCAN instead of alloca+cast
remove old/wrong todo comments
a bit of cleanup, break at 80 cols
passing NULL to sc_zero is pointless
strcalc: remove SC_X defines and use numbers
add sc_popcount()
make strcalc operate on sc_word (=unsigned char) instead of char
add strcalc unittest
strcalc: remove unnecessary CLEAR_BUFFER calls
use sc_zero instead of CLEAR_BUFFER macro
disallow NULL as destination for sc_XXX insn, avoid memmove
strcalc: cleanup do_mul
strcalc: remove do_sign, use sc_sign
remove carry flag setting for functions which do not return it
introduce SC_MASK constant
remove more tables
strcalc: compute carry_flag locally and avoid global variable
strcalc: use bool where possible