memory-visualization d3
html visualization included
use hugepages without size specification

hugepages can now be used without specifiying the exact size during the
use_hugepages() call. we now parse /proc/meminfo to determine the number
of hugepages available.
added visualization examples
minor fixes to memory monitoring
unified format output type enum

the storage visualization and memory visualization now use the same enum
to define the output format.
fixed typo
Merge branch 'master' of github.com:simongog/sdsl-lite

Conflicts:
	include/sdsl/construct.hpp
	include/sdsl/csa_sada.hpp
	include/sdsl/csa_wt.hpp
	include/sdsl/cst_sct3.hpp
	lib/construct_lcp.cpp

also fixed other compile errors and added KEY_CSA prefix.
Merge branch 'master' of github.com:simongog/sdsl-lite

Conflicts:
	tutorial/expl-16.cpp
Merge pull request #102 from mpetri/mem-vis-d3-fixed

Major changes and additions to memory visualizations and hugepage support