--no commit message

Total rewrite for DQL alias model: now using short aliases instead of long aliases (needed for Oracle portability). 

Both default to TRUE. If set to false, you need to explicitly specify "length" and/or "type" in the parameter of hasColumn that specifies the validators for that column.

when using Doctrine::compile(), having the require_once()'s in the source files will break things. This is because the file hasn't been included, but the class has been defined in the compiled file.  This means you have to rely on autoload to allow compile to function (or strip out all require_once's from the code on compile, but atleast one needs to be maintained). IMPORTANT: you MUST now use autoload.

Added Doctrine::tableize(), Doctrine::classify() and DataDict::isValidClassname() for proper table naming. Fixed Table() to accept these (more need to be changed such as rawsql).Also fixed unbind method (missing argument)