radamsa test case selection could be more flexible

radamsa --subset and -m <n>mb could be extended, and possibly merged, to do 
some useful things automatically by having something like

 $ radamsa -m 10mb --truncate subset|truncate|auto

meaning pick 1-n files until the memory limit is hit, take all but use weighted 
tail truncation (current default), or combine both. a nice extra feature would 
be 'heuristic', which uses some technique to probably pick distinct kinds of 
samples, for example by using shared substrings of first 4Kb of data to 
partition data below nfiles/X, and then pick n files from the buckets randomly.

Original issue reported on code.google.com by aohelin on 20 Apr 2011 at 1:08

idkwim / ouspg

radamsa test case selection could be more flexible #51