Use the native FPU stack for the FPU JIT, basically just using the modrm
generator to calculate addresses, and simulating the mask bits of the
FPU control word. FPU instructions that just use the x87 stack are simply
copied.


git-svn-id: https://dosemu.svn.sourceforge.net/svnroot/dosemu/trunk@1955 7758b857-130e-0410-ab9c-d8735a528d18