Fixes #395 (Complex Razor Microkernel version numbers not handled properly); changes made in December of 2012 to handle the more complex version numbers that could be generated by the, at the time, newly revised Microkernel ISO build process led to issues when comparing newer, stable versions of a Microkernel with older, patched versions of the Microkernel.  The code that calculate the weights used to determine which to load was not calculating these numbers correctly.  This change should resolve that issue by calculating the weights as floating point numbers (with the part after the decimal being the commit number and the part before the decimal being an integer representation of the latest tag) instead of comparing these versions as integer numbers (which did not work...older, patched versions were preferred over newer, unpatched versions).
Modified weight calculations further to properly handle the new semantic version numbering scheme being applied to the Razor Microkernel project (so that v0.10.0 will evaluate higher than v0.9.3.0)
Merge pull request #396 from tjmcs/tb/fixes-rz-mk-versioning-problem

(#395) Complex Razor Microkernel version numbers not handled properly