Improved documentation about O.load and O.save, motivated by question #230900
include integration scheme for inertia tensors of clumps; inertia/masses/volumes of clumps are updated automatically by call of updateProperties method; removed adaptClumpMasses method and example script
Merge branch 'master' of github.com:yade/trunk
make getRoundness() faster
shorten the code of Clump.cpp: switched getClumpVolumeAndAdaptInertia() method into updateProperties()
small fix of a comment
+4 journal papers
+1 journal article
small fix in an example script
Merge branch 'master' of github.com:yade/trunk
various wire contact laws available now, add reference with details, add a check script for the wire model
various wire contact laws available now (new version), add reference with details
Lots of changes in the inelastic cohesive set of classes.
- correct a lot of bugs and comment the inelastic cohesive law : pkg/dem/Law2_ScGeom6D_InelastCohFrictPhys_CohesionMoment
- change some variables names and comments : pkg/dem/InelastCohFrictMat pkg/dem/InelastCohFrictPhys pkg/dem/Ip2_2xInelastCohFrictMat_InelastCohFrictPhys
Prepare for flowengine compilation.
- add "LINSOLV" source code for DEM-PFV coupling with direct sparse solvers
Merge libplugins, libsupport and libcore in libyade.

After this commit the division between files in core/ pkg/ and lib/
directories is the only "geografical". All of them will be compiled into
the libyade.

It is getting more and more difficult to keep core modules pristing from
using "plugins" functions. So we get linkage problems.
remove unused #include in Clump.cpp
Fix FindCholmod.cmake.
Fix compilation of FlowBoundingSphere.ipp
Replace Cholmod-Feature by LinSolv.