Rename BoundingBox to Box (ticket #126)

Doc improvement for visitor classes (ticket #134)

Fix processedMap() named parameter for dijkstra() (ticket #140)

Stream operators for Point and BoundingBox classes (ticket #126)
- Add operator<< and operator>> for BoundingBox.
- operator<< of Point gives space-less output.

Ignore the downloaded tag files

Section writer class

Merge

Update README file.

Update INSTALL file.

Many improvements in bfs.h, dfs.h and dijkstra.h
- Add run() function to Bfs and run(s,t) function to DfsVisit.
- Add debug checking to addSource() function of Dfs and DfsVisit.
- Add a few missing named parameters (according to \todo notes).
- Small fixes in the code (e.g. missing derivations).
- Many doc improvements.
- Remove \todo and \warning comments which are no longer valid.
- Remove \author commands (see ticket #39).
- Fixes in the the doc (e.g. wrong references).
- Hide the doc of most of the private and protected members.
- Use public typedefs instead of template parameters in public functions.
- Use better parameter names for some functions.
- Other small changes to make the doc more uniform.

Merge

Improve test/dim_test.cc