Add bridges and spanning trees functions for graphs
Merge branch 'u/jdickinson/ticket/16307' of git://trac.sagemath.org/sage into ticket/16246
Remove bridges and spanning_trees from generic_graph.py
Add updated bridges and spanning_trees to graph.py
Minor docstring updates
Slightly expand docstrings for bridges() and spanning_trees()
Add bridges() and spanning_trees() to doc table.
trac #16246: Merged with 6.3.beta0
trac #16246: Rewritten all_spanning_trees function
trac #16246: Doc improvements
Fix virtual rays for fans in non-saturated lattices.
ensure that codewords of a code are immutable

This requires modifications to the underlying iterator that generates the
codewords, as well as to the __getitem__ method in the LinearCode class.
By default, the codewords of a code should not be changed; hence the patch
document the immutable option for projective space iterator
FiniteStateMachine: Corrected adjacency matrix for transitions with output of length not 1
FiniteStateMachine.adjacency_matrix: additional example in documentation
trac #16246: Merged with 6.3.beta1
trac #16246: renaming a variable
# Tue Oct 22 20:59:00 2013 -0400

# Node ID 757a36139a0c9b0cd35a16e9c095aec2de297c44
# Parent  064c00dde578734037f5656781cd62e15eb9d94a
[mq]: fast_mult
rebase to 6.2.beta7 and remove whitespace
# Tue Oct 22 20:59:00 2013 -0400

# Node ID 757a36139a0c9b0cd35a16e9c095aec2de297c44
# Parent  064c00dde578734037f5656781cd62e15eb9d94a
[mq]: fast_mult
import mercurial patch

[mq]: myPatch2.patch