What are the general ‘housekeeping’ chores that need to be done whenever copying projects from a Mac to a PC, and vice versa?
For safety, one of the easiest ways is to export the whole thing as a package. Using SVN or some other version control software would work too, you would need to enable Asset Serialization(read meta data[Edit->Project Settings->Editor Settings]). If using some versioning system, you will exclude the temp directory and the library directory(will be rebuilt, you don’t need another computers references to things).