[[Imported from SVN: r6831]]

[[Imported from SVN: r6830]]

It can (almost) handle couplings to an arbitrary number of rods now.

[[Imported from SVN: r6829]]

[[Imported from SVN: r6828]]

[[Imported from SVN: r6827]]

[[Imported from SVN: r6826]]

... to n continua and 1 rod.

[[Imported from SVN: r6825]]

In a first step, the data structures are generalized.
All stuff is again kept in std::maps index by strings.
This initial patch contains a few map lookups in very
undesirable places.  This will be fixed in the very
near future.

[[Imported from SVN: r6824]]

[[Imported from SVN: r6823]]

[[Imported from SVN: r6822]]

[[Imported from SVN: r6821]]

[[Imported from SVN: r6820]]

[[Imported from SVN: r6819]]

[[Imported from SVN: r6818]]

[[Imported from SVN: r6817]]

[[Imported from SVN: r6816]]

[[Imported from SVN: r6815]]

[[Imported from SVN: r6814]]

[[Imported from SVN: r6813]]

[[Imported from SVN: r6810]]

[[Imported from SVN: r6809]]

[[Imported from SVN: r6808]]

[[Imported from SVN: r6807]]

[[Imported from SVN: r6806]]

[[Imported from SVN: r6803]]

bugfix: use operator[] instead of find() if you want to force creation of a non-existant entry in a std::map

[[Imported from SVN: r6802]]

[[Imported from SVN: r6801]]

[[Imported from SVN: r6800]]

[[Imported from SVN: r6799]]

[[Imported from SVN: r6798]]

don't store the continuum interface boundary in the Steklov-Poincare step -- use the one from the complex instead

[[Imported from SVN: r6797]]

[[Imported from SVN: r6796]]

[[Imported from SVN: r6795]]

[[Imported from SVN: r6794]]

ake the interfaceBoundary a LeafBoundaryPatch, instead of a vector of LevelBoundaryPatches, and remove the hacks associated with the latter

[[Imported from SVN: r6793]]

[[Imported from SVN: r6792]]

[[Imported from SVN: r6779]]

After all, we are thinking 'Steklov-Poincare' here, which means
we are solving an equation on the interface.  The old code
taking into account the subdomain solutions wasn't really satisfying:
in particular, it was not symmetric wrt the subdomains.

[[Imported from SVN: r6762]]

[[Imported from SVN: r6761]]

[[Imported from SVN: r6760]]