compiler-warnings: on apple, raise frame/stack usage warn to 5K
compiler-warnings: on apple, raise frame/stack usage warn to 5K

no clue why it generates so bloaty code

darktable-org/rawspeed,LebedevRI/rawspeed,darktable-org/rawspeed,darktable-org/rawspeed,LebedevRI/rawspeed,LebedevRI/rawspeed,LebedevRI/rawspeed,LebedevRI/rawspeed,darktable-org/rawspeed,darktable-org/rawspeed