Initial Commt for benchmark_lcp
added peak memory usage functionality to memory manager
Added Elias gamma coder.

Using gamma code was suggested in Grossi, Gupta, Vitter (SODA 2004).
Thanks to Kunihiko Sadakane for pointing this out.
Fixed warning in CLANG.
Merge pull request #132 from simongog/fix_warning

Fixed warning in CLANG.
Handled implicit conversion.
Merge pull request #129 from xosh/benchmark_wt

Benchmark wt
Merge pull request #130 from mpetri/mem-peak

added peak memory usage functionality to memory manager
Merge pull request #133 from simongog/gamma-code

Added Elias gamma coder.
Fixed typo.
Merge branch 'master' of github.com:simongog/sdsl-lite
Added coder test and updated cheatsheet.
Added copy ctor for node type.
Use memory_monitor to get memory peak
Merge branch 'master' of https://github.com/simongog/sdsl-lite into benchmark_lcp
Merge pull request #134 from simongog/fix_copy_costr_cst_node

Added copy ctor for node type.
minor changes in benchmark/lcp
fixed hugepage alloc when extending last free block
Merge pull request #135 from mpetri/fix_hugepage_alloc

fixed hugepage alloc when extending last free block
Fixed bug in memory measurement of the bwt