New Linux examples - LD_PRELOAD and commandline cloaking

[pathtofile]

Added two new linux examples:

• building a library to use as LD_PRELOAD to hook libc
• Some various techniques to hide your real process name and commandline arguments
  • This also includes calling Syscalls in a nice way, and how to run our own 'main' to get direct memory access to our argv

Also changed Makefile to exlude building and linux_* files for Windows, as they won't work.

Both of these are adapted from my CommandLine Cloaking repo

[byt3bl33d3r]

@pathtofile thanks for the contribution! See my comments on the Makefile. if you have time to fix that please do and I'll merge it in. Cheers