[FEATURE] Adds global interfaces for basic bit manipulations.

This feature adds basic bit manipulation interfaces, such that those operations can be efficiently performed on bit vectors as well.
The commit also contains tests for the new interfaces and the specializations for the packed string, as well as documentation of the new interfaces.
Merge branch 'develop' of https://github.com/rrahn/seqan into develop
Merge branch 'develop' of https://github.com/rrahn/seqan into feature_bitwise_manipulation
Merge branch 'develop' of https://github.com/seqan/seqan into develop
[FEATURE] Adds basic functors and bit manipulations for bit vectors. Removes generic interfaces for bitwise manipulations from a previous commit.
[INTERNAL]  Adds some minor fixes.
[API] Moves functors for bit manipulations from basic to misc.
[FIX] Fixes warnings for unused typedefs.
Merge branch 'develop' of https://github.com/seqan/seqan into develop
Merge branch 'develop' of https://github.com/seqan/seqan into develop
Merge pull request #204 from rrahn/develop

[FEATURE] Adds global interfaces for basic bit manipulations.