Temporarily disable tilemap/pattern viewers.
Render scanline at start of hblank, not at end of it

- Fixes corrupted single lines in many demos (e.g demonblood)
- Alleyway still broken :/
Add almost, but not entirely working DAA instruction
Logging improvements.
Don't raise LCD STAT interrupts during VBlank

Also, raise OAM irq at proper time.

- Demos from Jumalauta won't crash anymore
- Fixes several graphic bugs in Memonblood
- Fixes girl scene in OH

Known bugs at this point:
    - Mplay demos crash
    - twist scene in Gejmboj (before dog scene)
    - iPod scene in OH lacks effects
    - Alleyway still has the buggy scanlines
    - arrow effect in Demonblood not visible
Mark GUI textbox memory reads as emulator-internal
Code style in Cpu.cpp
Insn trace lists opcode operands now.