Reorder rt02d local basis functions according to the generic edge numbering

[[Imported from SVN: r104]]
Remove warnings about comparison of sigend and unsigned

[[Imported from SVN: r105]]
First untested version of P_k 3D local basis functions.

Testing, documentation and implementation of jacobian still missing.

[[Imported from SVN: r106]]
Add pk3d to make module compile again.

[[Imported from SVN: r107]]
First revision of P_k 3D local basis function.

Fixed several bugs, but no real testing up to now.  Don't use them yet.

[[Imported from SVN: r108]]
P_k 3D local basis functions seem to be working now; jacobian still missing

[[Imported from SVN: r109]]
Ignore makefile

[[Imported from SVN: r110]]