Revert "configure: Set more reasonable default optimization levels."
Revert "configure: Set more reasonable default optimization levels."

This reverts commit 0f879bd7566a7ba3b3a6c0ca3e5366ae6acfa798.

aolofsson/pal,debug-de-su-ka/pal,8l/pal,mateunho/pal,Adamszk/pal3,8l/pal,mateunho/pal,eliteraspberries/pal,eliteraspberries/pal,mateunho/pal,debug-de-su-ka/pal,parallella/pal,parallella/pal,olajep/pal,Adamszk/pal3,parallella/pal,Adamszk/pal3,Adamszk/pal3,aolofsson/pal,parallella/pal,debug-de-su-ka/pal,debug-de-su-ka/pal,8l/pal,aolofsson/pal,olajep/pal,eliteraspberries/pal,olajep/pal,mateunho/pal,mateunho/pal,eliteraspberries/pal,8l/pal,debug-de-su-ka/pal,parallella/pal,olajep/pal,aolofsson/pal,eliteraspberries/pal