Added access functions to directly compute different constitutive matrices (analogous with giveRealStressVector_*)
Added a fluid cross-section (which is only there to keep track of the material model).
Added unfinished (and very preliminary) python script for upgrading the input files to the new suggested changes.
Merge branch 'master' of github.com:Micket/oofem

Conflicts:
	src/sm/quad1mindlin.C
	src/sm/quad1mindlinshell3d.C
	src/sm/simplecrosssection.C
Changed the hardcoded sparse matrix to skyline to ensure that test passes. (temporary fix).