Dependencies

• Drop Boost dependency. Use tinyxml2 to read existing XML config archives.
• Drop librlog dependency. Use easylogging++ for logging.

C++11

• use std unordered_map in place of GNU internal hashmap

Build system

• switch to CMake
• OSX build improvements, RPATH setup

Fuse

• add encfs_create operation
• replace getdir with readdir

Misc

• cleanup includes and reformat code
• allow writes in reverse mode when no header is used