bugfix in thirdDerivativeOfDistanceSquaredWRTFirst1AndSecond2Argument.  Now it produces the same result as the fd approximation at least in for S^1

[[Imported from SVN: r7066]]

[[Imported from SVN: r7053]]

[[Imported from SVN: r7052]]

[[Imported from SVN: r7051]]

[[Imported from SVN: r7050]]

[[Imported from SVN: r7049]]

[[Imported from SVN: r7048]]

[[Imported from SVN: r7033]]

[[Imported from SVN: r6501]]

[[Imported from SVN: r6496]]

[[Imported from SVN: r6450]]

[[Imported from SVN: r6437]]

export the manifold dimension as 'dim'.  The main class template parameter had to change names for this

[[Imported from SVN: r6433]]

The first dim rows contain an orthonormal frame of the tangent space
as before.  The new rows contain an orthonormal frame of the
normal bundle.

[[Imported from SVN: r6432]]

[[Imported from SVN: r6424]]

[[Imported from SVN: r6388]]

[[Imported from SVN: r6309]]

[[Imported from SVN: r6300]]

[[Imported from SVN: r6296]]

[[Imported from SVN: r6295]]

[[Imported from SVN: r6294]]

[[Imported from SVN: r6293]]

[[Imported from SVN: r6210]]

[[Imported from SVN: r5991]]

[[Imported from SVN: r5964]]

For this now the TangentVector class of S^n has only n components,
while the EmbeddedTangentVector class still has n+1.
The code around it needs to be fixed accordingly.

[[Imported from SVN: r5963]]

[[Imported from SVN: r5931]]

[[Imported from SVN: r5793]]

[[Imported from SVN: r5786]]

[[Imported from SVN: r5743]]

[[Imported from SVN: r5739]]

[[Imported from SVN: r5707]]

[[Imported from SVN: r5673]]

[[Imported from SVN: r5672]]

[[Imported from SVN: r5671]]

[[Imported from SVN: r5670]]

barf if derivative of distance is requested for two conjugate points.  The derivative doesn't exist in that case

[[Imported from SVN: r5589]]

[[Imported from SVN: r5588]]

[[Imported from SVN: r5576]]

[[Imported from SVN: r5575]]