When verifying a package, RPM produces output only if there is a verification failure. When a file fails verification, the format of the output is a bit cryptic, but it packs all the information you need into one line per file. M is the file's mode. 5 is the MD5 checksum of the file. D is the file's major and minor numbers.
L is the file's symbolic link contents.
U is owner of the file. G is the file's group. T is the modification time of the file. This is handy for quickly identifying config files, as they are very likely to change, and therefore, very unlikely to verify successfully. The complete path is listed to make it easy to find.