Added a snetc compiler Linux binary which is based on a SNet SVN checkout of:
svn checkout -r r3576 .  This does NOT yet have the AST
changes by Merijn and therefore DOES work with the current
S-Net Github repositories.
Someone still needs to add a OS X equivalent.
added up-to-date snetc for Linux compiled on a not-so-recent Linux
distro (for compatibility reasons).
Merge pull request #2 from gijsbers/master

Add a Linux compiler binary which does work with the current Github repositories