[[Imported from SVN: r8150]]

target space classes.  In particular, the coordinate type
now has to be given explicitly.

[[Imported from SVN: r8149]]

It makes it difficult to be sure that an explicitly
requested type is really handed over to every place.

While we are at it: reverse the order of the template
parameters.  Now first comes the type, then the dimension.
This is more like FieldVector and friends, and hence
should be less confusing.

[[Imported from SVN: r8148]]

[[Imported from SVN: r8147]]

[[Imported from SVN: r8146]]

[[Imported from SVN: r8145]]

[[Imported from SVN: r8115]]

[[Imported from SVN: r8111]]

[[Imported from SVN: r8110]]

[[Imported from SVN: r8109]]

[[Imported from SVN: r8105]]

[[Imported from SVN: r8104]]

fix interpolation-bug when quaternions don't have the same sign. Thanks to Oliver Sander for the patch ;-)

[[Imported from SVN: r8102]]

[[Imported from SVN: r8101]]

[[Imported from SVN: r8074]]

[[Imported from SVN: r8070]]

[[Imported from SVN: r8062]]

[[Imported from SVN: r8059]]

[[Imported from SVN: r8058]]

[[Imported from SVN: r8057]]

[[Imported from SVN: r8056]]

[[Imported from SVN: r8055]]

[[Imported from SVN: r8054]]

[[Imported from SVN: r8053]]

[[Imported from SVN: r8052]]

[[Imported from SVN: r8051]]

[[Imported from SVN: r8050]]

[[Imported from SVN: r8049]]

[[Imported from SVN: r8048]]

This is needed to test quad elements and higher-order gfe.

[[Imported from SVN: r8047]]

and hand it to all tests, rather than having each test create
its own.

[[Imported from SVN: r8046]]

[[Imported from SVN: r8045]]

[[Imported from SVN: r8044]]

[[Imported from SVN: r8043]]

[[Imported from SVN: r8042]]

needed to make the targetspacetest.cc test case pass.

[[Imported from SVN: r8041]]

[[Imported from SVN: r8040]]

[[Imported from SVN: r8039]]

restrict testing to point that are closer than 0.5*M_PI apart.  That's a hacky way to avoid degenerate cases

[[Imported from SVN: r8038]]

[[Imported from SVN: r8036]]