- regIOobject: don't re-register an unregister object on rename/assignment
- Hasher: split-off HasherInt with uint32_t specializations
- IOobject: writeBanner/writeDivider return Stream for easier chaining.
... also dropped some namespace bracketing while I was at it.
* new -srcDoc option to display doxygen-processed source code
* display standard options -help/-doc/-srcDoc at end of usage
* consolidate code when writing IOobject headers
* drop writeLogbanner and add optional bool to writeBanner
* minor formatting changes