Replace TimeStamp Based Incremental Builds

[mwasplund]

Is your feature request related to a problem? Please describe. Replace time-stamp based builds with a better solution.

Describe the solution you'd like Time stamps are not a true indication of when a file does not match up with the output of a build. We need to has the contents of a file to determine if they match up with the original source that was used to generate a build output to have a true indication if an incremental build needs to re-run an operation