Merge pull request #3 from perror/master

Adding (real) self-modifying code example for i386
Adding various older Apple PPC / ARM binaries
Merge pull request #4 from nstarke/old-apple-binary-additions

Adding various older Apple PPC / ARM binaries
Collection of anti-disassembler tricks
- Adding instruction overlap trick
- Adding an example on manipulation program counter
- Adding a stack-buffer-overflow problem
- Adding dynamic jump tests
Merging