- converted all anonymous labels and aliases to be generated within the compilation...

- converted all anonymous labels and aliases to be generated within the compilation phase.  this allows fully "deterministic" label generation. theres a couple of unit test failures that need to be fixed but most are passing.
- also some tweaks to unicode result column names; no longer chopping out characters from the names, since the name might be composed of all non-ascii characters.  mysql needs some work here since its returning, i think, the unicode's internally-encoded bytes directly within a bytestring.
- need to simplify the amount of dictionaries present in ANSICompiler, its pretty hard to follow at this point.