to include some information about the build environment.

to get dependencies right.

source encoding.

the fileobj argument has no usable name attribute (e.g. StringIO).

(backported from r57616)

made to the trunk awhile ago I believe.

 (backport from rev. 57389)

library installed both were detected so both modules were enabled.  But the include
path causes the recent BerkeleyDB's db.h file to be included causing the bsddb185
compile to fail.  This disables building bsddb185 when both are present.

  ------------------------------------------------------------------------
  r57286 | gregory.p.smith | 2007-08-22 14:32:34 -0700 (Wed, 22 Aug 2007) | 3 lines

  stop leaving log.0000001 __db.00* and xxx.db turds in developer
  sandboxes when bsddb3 tests are run.

 (backport from rev. 56833)

Fixes #1730114.
 (backport from rev. 56830)

 (backport from rev. 56797)

Fix gb18030 codec's bug that doesn't map two-byte characters on
GB18030 extension in encoding. (bug reported by Bjorn Stabell)

 (backport)

 (backport from rev. 56614)

 (backport from rev. 56611)

represent the result in a single character.

- be more strict about the build environment
- update some 3th party libraries

 (backport from rev. 56551)

 (backport from rev. 56451)

Avoid exception if there's a stray directory inside a Maildir folder.

The Maildir specification doesn't seem to say anything about this
situation, and it can happen if you're keeping a Maildir mailbox in
Subversion (.svn directories) or some similar system.  The patch just
ignores directories in the cur/, new/, tmp/ folders.