gemma.cpp: Do eigendecomposition the same way as with LMM....This way, one can export the eigen* data that matches the one used
while doing LMM. Otherwise the exported eigenvectors are sliiiiightly
off and break the computations depending on them in Mgamma.
Add floating point hardware checking for Intel on GNU compilers...When using the -check function (the default) it is enabled for Kinship
computation and LM/LMM up to individual SNP computation. This means
there can no longer be NaN values for matrices that are reused for every
SNP, but it is possible to have NaN for individual SNPs.
Fixes #161