Merge #179 (Port the min mean cycle algorithms)

Add tolerance() functions for MMC classes (#179)

Separate group for the min mean cycle classes (#179)

Simplify comparisons in min mean cycle classes (#179)
using extreme INF values instead of bool flags.

Add HartmannOrlin algorithm class (#179)
This algorithm is an improved version of Karp's original method,
it applies an efficient early termination scheme.
The interface is the same as Karp's and Howard's interface.

Add Karp algorithm class (#179)
based on the MinMeanCycle implementation in SVN -r3436.
The interface is reworked to be the same as Howard's interface.

Rename MinMeanCycle to Howard (#179)

Add a detailed test file for MinMeanCycle and fix test_tools.h (#179)

Rename cyclePath() to cycle() in MinMeanCycle (#179)

Traits class + named parameters for MinMeanCycle (#179)

- Add a Traits class defining LargeValue, Tolerance, Path types.
LargeValue is used for internal computations, it is 'long long'
if the length type is integer, otherwise it is 'double'.
- Add named template parameters for LargeValue and Path types.
- Improve numerical stability: remove divisions from the internal
computations. If the arc lengths are integers, then all used
values are integers (except for the cycleMean() query function,
of course).

Rework and fix the implementation of MinMeanCycle (#179)

- Fix the handling of the cycle means.
- Many implementation improvements:
- More efficient data storage for the strongly connected
components.
- Better handling of BFS queues.
- Merge consecutive BFS searches (perform two BFS searches
instead of three).

This version is about two times faster on average and an order of
magnitude faster if there are a lot of strongly connected components.

Simplify the interface of MinMeanCycle (#179)
Remove init() and reset(), and move their content into findMinMean().

Port MinMeanCycle from SVN -r3524 (#179)
with some doc improvements

Merge #184

Update Doxygen configuration file

Insert citations into the doc (#184)

- Add general citations to modules.
- Add specific citations for max flow and min cost flow algorithms.
- Add citations for the supported LP and MIP solvers.
- Extend the main page.
- Replace inproceedings entries with the journal versions.
- Add a new bibtex entry about network simplex.
- Remove unwanted entries.

Handle url fields in bib2dox.py (#184)
and modify the bibtex file using url fields.

Merge bugfix #322

Distribute LEMONConfig.cmake.in (#322)

Merge bugfix in #250

Merge #317

Remove unnecessary OsiCbc dependency (#317)

Fix (and improve) error message in mip_test.cc (#317)

Add soplex support to scripts/bootstrap.sh plus...
it checks whether cbc and soplex are installed at the given prefix.

Faster add row operation (#203)

One virtual function call instead of more

Improve bib2dox.py using \section for entiries (#184)

Integrate bib2dox.py into the build environments (#184)

Add bib->dox converter and initial references.bib (#184)

Merge #311

Merge

Add a warning for List(Di)Graph::Snapshot (#311)
and extend tests for snapshots

Modify the implementation of ListDigraph::ArcIt (#311)

The new implementation is based on out-arc iteration (like
ListGraph::ArcIt) instead of in-arc iteration to make it
consistent with the documentation.

Much better implementation for node splitting (#311)
in ListDigraph. This solution is the same as the one that
is used in SmartDigraph. It is much faster and does not
invalidate any iterator like the former implementation.

Add a resize() function to HypercubeGraph (#311)
just like the similar functions in other static graph structures,
and extend the test files to check these functions.

Add reserve functions to ListGraph and SmartGraph (#311)
ListDigraph and SmartDigraph already have such functions.

Doc improvements, fixes and unifications for graphs (#311)

Doc improvements and unification for graph concepts (#311)

Copyright notices added to scripts

Simple interactive bootstrap script

Merge #298

Merge

Small improvements for NetworkSimplex (#298)

Add a parameter to control arc mixing in NS (#298)

Small improvements in NS pivot rules (#298)

Merge #302

Add creator functions for IdMap and RangeIdMap (#302)

Rename ValueIterator to ValueIt in graph maps (#302)
but keep ValueIterator as an alias in CrossRefMap
(only for reverse compatibility).

Extend maps_test.cc (#302)

Doc improvements for several graph maps (#302)

Merge

Improvements for graph maps (#302)

- Add a count() function to CrossRefMap.
- Add tests for IdMap and RangeIdMap.
- Extend tests for CrossRefMap.
- Improve the doc.

Merge

Also check ReferenceMapTag in concept checks (#312)

Merge

Small doc improvements (#304)

Merge

Rearrange modules (#303)

Small doc improvements

Merge

Unify member names in heaps (#299)

The following renamings are made.

Public members:
- UnderFlowPriorityError -> PriorityUnderflowError
("underflow" is only one word)

Private members:
- bubble_up() -> bubbleUp()
- bubble_down() -> bubbleDown()
- second_child() -> secondChild()
- makeroot() -> makeRoot()
- relocate_last() -> relocateLast()
- data -> _data
- boxes -> _boxes

Move the heaps to a separate group (#299)

Improve and unify the documentation of heaps (#299)
and avoid a warning in SimpleBucketHeap::operator[].

Merge

Much faster implementation for BinomHeap (#301)