- objectRegistry gets a rename() that also adjusts the dbDir
- cloud reworked to use static variables subInstance and defaultName.
This avoids writing "lagrangian" everywhere
string fixes
- avoid masking of std::string::replace in string.H
- avoid old strstream in PV3FoamReader
- handle new cloud locations, got missed before the release
- handle multiple clouds
- more efficient checking of fields etc.
- write case file at the end, thus we can potentially
do something more intelligent about the time set handling
