Christian Engwer told me a trick how to get the mpiHelper instance without
known argc and argv.

[[Imported from SVN: r9720]]

[[Imported from SVN: r9708]]

Offer setInitialIterate instead

[[Imported from SVN: r9429]]

[[Imported from SVN: r9428]]

[[Imported from SVN: r8234]]

[[Imported from SVN: r7842]]

[[Imported from SVN: r7837]]

[[Imported from SVN: r7611]]

[[Imported from SVN: r7029]]

[[Imported from SVN: r6835]]

[[Imported from SVN: r6670]]

Compute the local corrections in local coordinates on the tangent bundle now, instead of using the embedding in the surrounding space

[[Imported from SVN: r5985]]

[[Imported from SVN: r5984]]

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]]

remove the possibility to solve the inner problem with a truncated cg.  It never really worked and complicates the code

[[Imported from SVN: r5951]]

[[Imported from SVN: r5931]]

[[Imported from SVN: r5927]]

[[Imported from SVN: r5559]]

[[Imported from SVN: r5347]]

[[Imported from SVN: r4137]]

[[Imported from SVN: r4132]]

[[Imported from SVN: r4131]]

new method to setup a solver using a truncated cg as the inner solver.  This compiles, but it doesn't work yet

[[Imported from SVN: r4105]]

[[Imported from SVN: r4104]]

[[Imported from SVN: r4103]]

make the inner solver a pointer to a generic Solver class, in anticipation of using a truncated cg there

[[Imported from SVN: r4102]]

[[Imported from SVN: r4047]]

RodSolver is now called RiemannianTrustRegionSolver, and can be parametrized with the TargetSpace.  Some remains of RigidBodyMotion are still there, though.

[[Imported from SVN: r4041]]

[[Imported from SVN: r4040]]

[[Imported from SVN: r4037]]

The class 'Configuration' is now called 'RigidBodyMotion', and can be parametrized by the space dimension

[[Imported from SVN: r4003]]

[[Imported from SVN: r3990]]

[[Imported from SVN: r3413]]

[[Imported from SVN: r3285]]

[[Imported from SVN: r2927]]

[[Imported from SVN: r2603]]

[[Imported from SVN: r2524]]

[[Imported from SVN: r2198]]

[[Imported from SVN: r2015]]

[[Imported from SVN: r1766]]