archive_read_support_compression_*.c -> archive_read_support_filter_*.c
begins a move to symmetry with archive_write, function aliases will
Update some of the top-level guide files:
* Remove PROJECTS in favor of the WishList in the Wiki
* Clarify INSTALL
* getdate.y no longer exists
* Minor README corrections and edits
Adjust for 2009.
Clarify the copyright situation: most sources are 2-clause BSD,
a few sources are still 3-clause, build files vary.
Fill in the libarchive-portable build infrastructure that uses autoco…