Check for invalid LEA/LDS/LES/LSS/LFS/LGS.
Distinguish between mem and reg for 0xc6/0xc7 opcodes (mov imm, modrm).


git-svn-id: https://dosemu.svn.sourceforge.net/svnroot/dosemu/trunk@1987 7758b857-130e-0410-ab9c-d8735a528d18