LinearSparseSolveAndInverse.h: Removing compiler warnings
LinearSparseSolveAndInverse.h: Removing compiler warnings

The eigen library gives warnings when compiled using
the 64 bits mode under MSVC. This commit adds a pragma to
remove the reporting of the warnings until such time as we can
get a more permanent fix.

simquest/opensurgsim,simquest/opensurgsim,simquest/opensurgsim,simquest/opensurgsim