Make ASC work with ASDF 3.1.7.x or later

(Whoopts! I lost the _if_ part of aif). How sad.

Remove `aif`; use `ignorable` rather than `ignore`

darcs-hash:20081024123551-3cc5d-f3151963d71c28da5f0653f3bcd3badb4badf807.gz

darcs-hash:20081020220455-3cc5d-86738303a115aa9cfcda2bbb44b3e266afdfba6b.gz

darcs-hash:20081020220440-3cc5d-242069dce3d664b1ed75e3c7245c5775fc56216f.gz

Ignore-this: def4dc1b6dc27c0cd8cbfb45cddbcf2d

darcs-hash:20081020194522-6b9e8-88b72e6e1bbe4d27276700d7b80d87ce957e2093.gz

darcs-hash:20080621022905-3cc5d-9c4c3a48bb391491adc553f480853471aebcb7d7.gz

darcs-hash:20080608144414-3cc5d-c7894e9dfa5a57cca714a020ca1ff77042228dfb.gz

darcs-hash:20070120223827-3cc5d-477400196aa0b9f835164f82a03fe7d597ebd280.gz

darcs-hash:20070120222549-3cc5d-6673cd90db311c5b67ea0d6efa17371a794daa85.gz

This is needed in situations when some systems are forwarding operations to
other systems. See metacopy for an example.

darcs-hash:20061017110214-6b9e8-0ef1e82c727ef1eafbd108e2a4ee1e03909597c3.gz

darcs-hash:20070107200120-3cc5d-ccd04d36f5b572ea9c536867156b6e698572fe22.gz

darcs-hash:20061101153218-3cc5d-3217efae3d61d2495b40f380ea2e3f5143f88b1d.gz

darcs-hash:20061002164705-3cc5d-98f11b807f3bc751481bac5a5c126fa60bf2ff2e.gz

darcs-hash:20060609140347-3cc5d-296172961037540ce415c23eef9a7cbcd1c2ee66.gz

darcs-hash:20060511033018-3cc5d-602f911657b987c7d65d8017b8e39ed2e08fa985.gz

darcs-hash:20060208150037-3cc5d-858c9b118a8bb06fede41874f71356fa6d7ed085.gz

darcs-hash:20060205024940-3cc5d-06ba2c6b7ad64c4960327ed5d7af19498734a810.gz

darcs-hash:20060202184617-3cc5d-c42647398c27057ae7b632c1d864935f373a50fa.gz

darcs-hash:20060131151542-3cc5d-56e9c5c7fd547d3fa2356743cdacfdc9efd918e3.gz

darcs-hash:20060127034615-3cc5d-1bba4a88670e0cdb136925ac03267e5a1bdd909e.gz

darcs-hash:20060119152252-3cc5d-4431128c5a6de8df8543335952fc282152bda6b6.gz

darcs-hash:20060109201651-3cc5d-b2d70a730225de02cd2c409e6c6bf452639b8123.gz

darcs-hash:20060109201630-3cc5d-a07247a57497d09d004a382f05b9ed38e88cf538.gz

darcs-hash:20060109201617-3cc5d-f36fb1a2d0638a728d33e0727ffd4035d34b00b7.gz

darcs-hash:20060106224432-3cc5d-bf9ddafaf577f95237de3bdceb9afd21c9751bfc.gz

darcs-hash:20060106214318-3cc5d-343f4ec93ef5ea428ee9e30b9bb6209da136008a.gz

darcs-hash:20060101142452-3cc5d-a0042a83cc6a06163f172ad217c374419bcd3644.gz

darcs-hash:20051220195956-3cc5d-1a38217629b3bed69766e83248b3e6829a6baa9d.gz

darcs-hash:20051219205325-3cc5d-93825ec3fda2cc1e596be8ee23e3533155ec28a6.gz

darcs-hash:20051219202825-3cc5d-df5a8782c9d7b5824e4ddbec262cb92185a7f9a1.gz

darcs-hash:20051212185428-3cc5d-ce4f939cdc15466e912aff61270828dd69a66927.gz

darcs-hash:20051207193152-3cc5d-1b2a36289f89e1e3c71be07115b36a1b398a628d.gz

darcs-hash:20051118151043-3cc5d-e791b32ed592c7111734cb5a576f6f47b90e3eab.gz