Error at Generating nop.temp due to very large number of connections to a node

[millerta]

This issue should be documented and a Warning statement added to the code if a
node has an unusually large number of connections. The problem might be fixed
by making allocation adjustments in the sparse matrix initialization.

Problem reported by John Ortiz, Dylan Harp, and Carl Gable:

My simple model was getting hung up on the “Generating nop.temp” step before exiting altogether and printing a generic message to the effect of “nop.temp file does not match”.
 After digging around, Dylan and I found that there was a node in our mesh with ~2500 connections to it. After reducing that number to 90, the issue was resolved.