1. textrel due to non-PIC asm (wine loader and tomsmocomp)
   tricky part was tomsmocomp, my strategy to make it easier to follow
   - asm uses XBX, so it must be changed to something else, problem is all
     other generic registers are already used, so one of them must be demoted
     to a memory variable (local var on stack, still fast)
   - simple grep based statistics shows that XDX is the best candidate
   - i replaced all XDX usage with olddx (renamed oldbx as it would no
     longer be needed anyway)
   - changed all XBX to XDX
   - replaced all MANGLE usage with asm param (using defines so it's even readable)
2. fixed GNU-stack too
3. ebuild has a typo: I810XvmC -> I810XvMC