Merge pull request #109 from zachriggle/rop-cache-quiet

Make message a bit quieter
Fix dupsh NUL bytes and make it shorter
Merge branch 'i386-dup-fix'
Get rid of skinny-space
Fixed logging bug in dynelf
Fixed #111
Clean up tubes on process exit
Make it optional, but default
Permit chaining of shellcraft
Autodetect output format
Ensure gdbserver is installed.  Important since it is not installed for any overthewire or smashthestack challenges
Merge pull request #115 from zachriggle/shellcraft-chain

Permit chaining of `shellcraft`
amd64 shellcodes
Merge remote-tracking branch 'upstream/master'
Merge branch 'gdb.debug'
Merge branch 'tube-cleanup'
Merge branch 'shellcraft-amd64'