Script to patch RPM .specs to work on RHEL5

Attempt to automatically make changes to the .spec files before we start building so that the packages will work on RHEL5 also. gcc44 and boost141 are in EPEL, cmake28 is in PUIAS.

Note: This is completely untested as there seems to be some discrepancies between the .spec files and the patches that is actually there, e.g. in superlu. Uncommitted (or unpushed) changes?