Fix is_explicitly_convertible to take account of the generic conversions.
Change sf_performance to use multiple files so we can actually compile the thing!
Minor doc updates.
Suppress some more warnings.
[SVN r81324]
Ensure powm promotes fixed precision types to avoid numeric overflow.
Allow the Miller-Rabin code to be used by native integers.
Fix Miller Rabin tests to actually return the test result!
Fix some bugs in cpp_int unsigned arithmetic, and ensure the Miller Rabin and random number code can be safely used with checked fixed precision integers.
[SVN r81269]
