Add desktop_linux_privilege_escalation module
Small bugfix (incorrect filename in data directory)
Removed redundant string "linux_" from exploit name
Converted LD_PRELOAD library from precompiled binary to metasm code.
Removed binary files from pull request (the code has already been converted to metasm)
Add post-exploitation module to get FW filtering rules
Ports default values added, is_internal REX function added, reference added
Do minor cleanup
Merge pull request #6 from jvazquez-r7/review_4187

Do minor cosmetic cleanup for post-exploitation module to get FW filtering rules
session.tunnel_peer changed by session.session_host. Other minor changes
Rex::Socket.to_sockaddr changed
Rex::Socket.to_sockaddr changed
Use DNS names
Fix DYNAMIC_BASE templates
Support 32 and 64-bit for exe-only, and fix -k
Document method

Fix #4366 (support dynamic_base templates)
recvfrom allocation changed
Show message at the end
Upgrade rails to 3.2.21
Define the Rails version constraint in a library constant