Grizzled-python

* Added `grizzled.misc.bitcount()`, to calculate the number of 1 bits in a
number.
* Modified `grizzled.db` for Oracle so that `get_tables()` uses `ALL_TABLES`,
not `USER_TABLES` (suppressing tables with "$" in them). Made similar change
for `get_indexes()`.
* Moved `grizzled.misc.str2bool()` to `grizzled.text.`

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* Added missing import of `re` module to `grizzled.db.sqlite` module.
* Move `grizzled/net.py` to `grizzled/net/__init__.py`.
* Added `grizzled.net.ftp` package and `grizzled.net.ftp.parse` module, the
latter containing a Python port of Dan Bernstein's `ftpparse` function,
for parsing output from an FTP server's "LIST" command.

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* Added `get_rdbms_metadata()` function to `grizzled.db` drivers, to return
information about the underlying RDBMS.
* Added `grizzled.collections.namedtuple()` function, which works like
Python's new 2.6 `namedtuple()` function. If running under 2.6, the
`grizzled.collections` version *is* the 2.6 `namedtuple()` function.
* Reorganized internals of `grizzled.db` for easier maintenance. Has no
effect on the visible API.
* Moved package metadata from `setup.py` to `grizzled/__init__.py`, making
it easier for other packages to use.

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* Improved Oracle support in `grizzled.db` package.

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* Added `unimplemented` decorator
* Fixed bad references to `os` module in `grizzled.os.daemonize()`.
* Renamed `grizzled.cmdline.CommandLineParser's` `show_usage()` method to
`die_with_usage()`. Provided a deprecated version of `show_usage()`.
* Added `init_simple_stream_logging()` to `grizzled.log` module.
* Added `get_one_of()` method to `grizzled.config.Configuration`
* Removed reference to nonexistent `InfoFilter` from `grizzled.log`

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* Eliminated extra `fork()` in `grizzled.os.spawnd()` function.
* Added `grizzled.collections.LRUDict` class, implementating a fixed-size
dictionary with least recently used semantics.
* The `grizzled.text` module now provides a `hexdump()` function.
* The `grizzled.text` module now provides a `str2bool()` function.
* `grizzled.file.include` module's `preprocess()` method is now a little more
careful about temp file turds.
* Fixed some unconverted camelCase variables in `grizzled.file.include`
module's `preprocess()` method, removing some runtime errors.
* Now properly bundles `ez_setup.py`
* `grizzled.db.DBDriver` now implements `paramstyle()` method that actually
does something.
* `grizzled.db` now has simple support for the Gadly pure-Python SQL
database. (See http://gadfly.sourceforge.net/)

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