draft: Add better errors when .PKGINFO can't be parsed due to missing fields
Sample output:
...
File "/home/prawn/projects/repod/repod/files/pkginfo.py", line 322, in from_file
raise RepoManagementError(
repod.errors.RepoManagementError: Encountered .PKGINFO missing mandatory fields: license
Edited by Insane Prawn