[[Imported from SVN: r4176]]

[[Imported from SVN: r4153]]

[[Imported from SVN: r4138]]

[[Imported from SVN: r4137]]

[[Imported from SVN: r4136]]

[[Imported from SVN: r4133]]

[[Imported from SVN: r4132]]

[[Imported from SVN: r4131]]

[[Imported from SVN: r4130]]

[[Imported from SVN: r4116]]

[[Imported from SVN: r4115]]

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: r4082]]

[[Imported from SVN: r4081]]

[[Imported from SVN: r4080]]

[[Imported from SVN: r4077]]

simpler evaluate of the function value.  Now only works with in the triangle, because there are some singularities lurking outside

[[Imported from SVN: r4076]]

[[Imported from SVN: r4072]]

[[Imported from SVN: r4071]]

[[Imported from SVN: r4069]]

[[Imported from SVN: r4068]]

[[Imported from SVN: r4067]]

bugfix: we need the derivative of the geodesic interpolation in the gradient computation (chain rule), not the derivative of the velocity interpolation

[[Imported from SVN: r4066]]

for debugging: add a method to compute gradients of local geodesic fe functions by finite-difference approximation (only 2d)

[[Imported from SVN: r4065]]

[[Imported from SVN: r4063]]

[[Imported from SVN: r4062]]

implement interpolation of the gradient for members of SO(3), some of this is still educated guesswork, though

[[Imported from SVN: r4060]]

[[Imported from SVN: r4059]]

[[Imported from SVN: r4058]]

[[Imported from SVN: r4057]]

[[Imported from SVN: r4055]]

[[Imported from SVN: r4054]]

[[Imported from SVN: r4053]]

[[Imported from SVN: r4052]]

[[Imported from SVN: r4051]]

[[Imported from SVN: r4050]]

[[Imported from SVN: r4049]]