Fix documentation issues (#314)

Fractional matching initialization of weighted matchings (#314)

Add fractional matching algorithms (#314)

General improvements in weighted matching algorithms (#314)

- Fix include guard
- Uniform handling of MATCHED and UNMATCHED blossoms
- Prefer operations which decrease the number of trees
- Fix improper use of '/='

The solved problems did not cause wrong solution.

Fix multiple execution bug in weighted matchings (#356)

This chgset also redoes the fix of [28c7ad6f8d91] and its backpont to 1.1,
[268a052c3043].

Add doc/references.dox to .hgignore

Replace figure at matching doc #348

The original bibartite_matching.eps is kept for future use.

Rename min mean cycle classes and their members (#179)
with respect to the possible introduction of min ratio
cycle algorithms in the future.

The renamed classes:
- Karp --> KarpMmc
- HartmannOrlin --> HartmannOrlinMmc
- Howard --> HowardMmc

The renamed members:
- cycleLength() --> cycleCost()
- cycleArcNum() --> cycleSize()
- findMinMean() --> findCycleMean()
- Value --> Cost
- LargeValue --> LargeCost
- SetLargeValue --> SetLargeCost

Fix gcc 3.3 compilation error (#354)

gcc 3.3 requires that a class has a default constructor if it has
template named parameters. (That constructor can be protected.)

Clarify type names in NetworkSimplex (#353)

This patch clarifies the misleading effects of the renamings
in [f3bc4e9b5f3a].

Merge #306

Add tolerance() functions for HaoOrlin (#306)

Merge #301

Also test fullInit() in suurballe_test (#181, #323)

Add traits class + named parameters to Suurballe (#323)

The following types can be modified using named parameters:
- FlowMap
- PotentialMap
- Path
- Heap + HeapCrossRef

Merge #181, #323

Rename heap structures (#301)

- KaryHeap --> DHeap
- FouraryHeap --> QuadHeap
- BinomHeap --> BinomialHeap

Add a fullInit() function to Suurballe (#181, #323)
to provide faster handling of multiple targets.
A start() function is also added, just for the sake of
convenience.

Rework and improve Suurballe (#323)

- Improve the implementation: use a specific, faster variant of
residual Dijkstra for the first search.
- Some reorganizatiopn to make the code simpler.
- Small doc improvements.

Remove unnecessary integer requirement in Suurballe (#323)

Bug fix in Suurballe (#323)

Configurable glpk prefix in ./scripts/bootstrap.sh and ...
unneeded solver backends are explicitely switched off with --without-*

Merge #342

Improve README and mainpage.dox (#342)

Merge #347

Use 'long long' flow cost in dimacs-solver.cc (#347)

Merge

Support tolerance technique for BellmanFord (#51)

A new operation traits class BellmanFordToleranceOperationTraits
is introduced, which uses the tolerance technique in its less()
function. This class can be used with the SetOperationTraits
named template parameter.