It took me some time to understand the subcomponent names. So here is the list with the full name of each subcomponent:
|SRFTS||Server: Full Text Search|
|SRCHAR||Server: Character sets|
|SRSP||Server: Stored Procecure|
I don't think there is anything really important in the list, but it might be a good trigger to update to the latest release.
Upgrading should be easy especially if you're using the APT or YUM repositories from Oracle. If you're upgrading to a new major release (e.g. from 5.5 to 5.6) then you should read the instructions in the reference manual.