PublicShow -- Run patch program

This library uses the GNU patch(1) program to merge changes.

Source patch(+Orig:string, +Diff:string, -Merged:string, +Options)
Patch the string Orig using Diff. Options:
Unify Status with the completion status of patch. This is exit(0) for smooth completion and exit(1) if there are merge conflicts.
Unify String with the data patch(1) sent to standard error.