initial commit for benchmark_wt
minor improvements
More examples for wavelet_trees
Merge branch 'benchmark_wt' of https://github.com/xosh/sdsl-lite into benchmark_wt

Conflicts:
	benchmark/wavelet_trees/wt.config
Formatting
Changed default test_cases
added support for all wavlet trees to the benchmark and changed the report layout
fixed bug in WtByteTest
Merge branch 'benchmark_wt' of https://github.com/xosh/sdsl-lite into benchmark_wt
allowed input interpretation
Changed default wt.config
Fixed copy&paste typo
Completed typo-fix
Changed default test_cases
Changed default wt_rlmn_63 to wt_rlmn_sd
Beautified report
Removed comment
Fixed types - thanks mpetri
Merge pull request #123 from xosh/benchmark_wt

Benchmark for Wavelet Trees