ThirdParty: bumping cmake to version 2.8.12
ThirdParty: bumping cmake to version 2.8.12. Adding cmake-2.8.12.spec
ThirdParty: bumping openmpi to version 1.6.5
ThirdParty: bumping hwloc to version 1.7.2
ThirdParty: ParMGridGen-1.0, metis-5.0pre2, scotch-5.1.10b: adjusting the compilation so we can use another compiler than gcc