build a file list for checksums-foo fields. Don't use float() to
compare formats, because Format: 1.10 should compare greater than
Format: 1.9 (use "1.9".split(".",1) and tuple comparison instead)

* dak/process_unchecked.py: check_md5sum becomes check_hashes
and check_hash. If changes format is 1.8 or later, also check
checksums-sha1 and checksums-sha256 for both .changes and .dsc.

Did a few style fixes. Moved determine_new and friends into daklib/queue. Removed some unneeded imports

(and do reject based on it if it has no GOODSIG also).

This allows for more than two keyrings to be used.

Add (not enabled by default) support for auto-fetching keys from a keyserver.  Originally written for the debian-women DAK install.

2004-11-27  James Troup  <james@nocrew.org>	* utils.py (re_no_epoch): s/\*/+/ as there must be a digit in an epoch.	(re_no_revision): don't escape '-', it's not a special character.	s/\*/+/ as there must be at least one non-dash character after the	dash in a revision.  Thanks to Christian Reis for noticing both of	these.2004-09-20  James Troup  <james@nocrew.org>	* melanie (reverse_depends_check): retrieve component	information too and display it if it's not 'main'.	* utils.py (pp_dep): renamed...	(pp_deps): ... to this.	* jeri (check_dep): update calls to utils.pp_deps().	* melanie (reverse_depends_check): likewise.2004-08-04  James Troup  <james@nocrew.org>	* utils.py (cant_open_exc): correct exception string,	s/read/open/, s/.$//.2004-06-20  James Troup  <james@nocrew.org>	* utils.py (changes_compare): if there's no changes["version"] use	"0" rather than None.  (Avoids a crash on unsigned changes file.)

2004-11-27  James Troup  <james@nocrew.org>	* utils.py (validate_changes_file_arg): s/file/filename/.	s/fatal/require_changes/.  If require_changes is -1, ignore errors	and return the .changes filename regardless.	* ashley (main): pass require_changes=-1 to	utils.validate_changes_file_arg().

2004-08-04  James Troup  <james@nocrew.org>	* jennifer (check_files): check for unknown component before	checking for NEWness.2004-06-17  James Troup  <james@nocrew.org>	* jennifer (check_dsc): s/dsc_whitespace_rules/signing_rules/.	* tea (check_dscs): likewise.	* utils.py (parse_changes): s/dsc_whitespace_rules/signing_rules/,	change from boolean to a variable with 3 possible values, 0 and 1	as before, -1 means don't require a signature.  Makes	parse_changes() useful for parsing arbitary RFC822-style files,	e.g. 'Release' files.	(check_signature): add support for detached signatures by passing	the files the signature is for as an optional third argument.	s/filename/sig_filename/g.  Add a fourth optional argument to	choose the keyring(s) to use.  Don't os.path.basename() the	sig_filename before checking it for taint.	(re_taint_free): allow '/'.

2004-06-24  James Troup  <james@nocrew.org>	* melanie (main): s/file/temp_file/ and close file handle before	removing the temporary file.2004-06-17  Martin Michlmayr  <tbm@cyrius.com>        * jeri (pp_dep): moved from here to ...        * utils.py (pp_dep): here.        * melanie (main): add reverse dependency checking.

2004-06-24  James Troup  <james@nocrew.org>	* test/006/test.py (main): check bracketed email-only form.	* utils.py (fix_maintainer): if the Maintainer string is bracketed	email-only, strip the brackets so we don't end up with	<<james@nocrew.org>>.

2004-04-03  James Troup  <james@nocrew.org>	* debian/control (Depends): add python2.1-email | python (>= 2.2)	needed for new utils.rfc2047_encode() function.	* utils.py (re_parse_maintainer): allow whitespace inside the	email address.	(Error): new exception base class.	(ParseMaintError): new exception class.	(force_to_utf8): new function.	(rfc2047_encode): likewise.	(fix_maintainer): rework.  use force_to_utf8() to force name and	rfc822 return values to always use UTF-8.  use rfc2047_encode() to	return an rfc2047 value.  Validate the address to catch missing	email addresses and (some) broken ones.	* katie.py (nmu_p.is_an_nmu): adapt for new utils.fix_maintainer()	by adopting foo2047 return value.	(Katie.dump_vars): add changedby2047 and maintainer2047 as	mandatory changes fields.  Promote changes and maintainer822 to	mandatory fields.	(Katie.update_subst): default maintainer2047 rather than	maintainer822.  User foo2047 rather than foo822 when setting	__MAINTAINER_TO__ or __MAINTAINER_FROM__.	* jennifer (check_changes): set default changes["maintainer2047"]	and changes["changedby2047"] values rather than their 822	equivalents.  Makes changes["changes"] a mandatory field.  Adapt	to new utils.fix_maintainer() - reject on exception and adopt	foo2047 return value.	(check_dsc): if a mandatory field is missing don't do any further	checks and as a result reduce paranoia about dsc[var] existence.	Validate the maintainer field by calling new	utils.fix_maintainer().	* ashley (main): add changedby2047 and maintainer2047 to mandatory	changes fields.  Promote maintainer822 to a mandatory changes	field.  add "pool name" to files fields.	* test/006/test.py: new file - tests for new	utils.fix_maintainer().

2004-04-01  James Troup  <james@nocrew.org>	* utils.py (temp_filename): new helper function that wraps around	tempfile.mktemp().	* lisa (prod_maintainer): likewise.	(edit_note): likewise.	(edit_new): likewise.	* lauren (reject): likewise.	* melanie (main): likewise.	* neve (do_sources): likewise.	* rene (main): likewise.	* tea (validate_sources): likewise.2004-03-31  James Troup  <james@nocrew.org>	* tea (validate_sources): remove unused 's' temporary variable.

2004-02-27  James Troup  <james@nocrew.org>	* rose (process_tree): use 'if var in [ list ]' rather than long	'if var == foo or var == bar or var == baz'.  Suggested by Martin	Michlmayr.	* jennifer (check_files): reduce 'if var != None' to 'if var' as	suggested by Martin Michlmayr.	* catherine (poolize): likewise.	* charisma (main): likewise.	* halle (check_changes): likewise.	* heidi (main): likewise.	(process_file): likewise.	* kelly (install): likewise.	(stable_install): likewise.	* utils.py (fix_maintainer): likewise.