Implementation of computeBHmatrixAt for quad1planestrain element
Implementation of compressible Mooney-Rivlin hyperelastic material
Addinig Mooney-Rivlin material into matlibmanual
Merge branch 'master' of http://www.oofem.org/git/oofem

Conflicts:
	src/sm/quad1planestrain.C
	src/sm/quad1planestrain.h