I was able to track down Juhani Mäkelä (original Nokia developer for maemo-security-certman) who sent me a parse-certdata-txt.c file that parses the Mozilla certdata.txt file. Now I am waiting to see if he can help me with the exact steps to take the output of parse-certdata-txt and get it into the right place in the maemosec-certman-common-ca package.

So it looks like there should be no problem getting the latest set of root CAs into CSSU