mairix-0.22-bp150.2.5

- license update: GPL-2.0
  no indication of aggregation. Fedora also denote this as GPL-2.0

- Since version 0.18 texinfo is not needed any more, remove
  build require on it.

- update license to new format

- Upgrade to bug fix release v0.22
  + Include the existing -x flag in the help message (Mark Hills)
  + Detect a trailing -f or -o with no following argument
  + Display message-ID in search -x mode
  + Skip symlinks when using mbox (R A Lichtensteiger)
  + Improve error message if home directory cannot be determined
  + Honour HOME environment variable (Andreas Amann)
  + MIME types are allowed to have "+" characters in them. (Jonathan Kamens)
  + Fix deficiencies in the parsing of mbox From lines (Jonathan Kamens)
  + Fix documentation nits (Tom Doherty)
  + Remove spurious message when the mtime of a message file has changed
  + Initialize the date header with a known value. (Samuel Tardieu)
  + Merge two conflicting solutions for bad MIME encoding
  + fix for MIME-related crash (Paramjit Oberoi)
  + Add support claws-mail (Anand Kumria)
  + Add MH sub-type support for ezmlm-archives (Claus Alboege)
  + Allow lines starting "From" to occur part-way through the header.o
  + Handle mbox from separators where email address is in angle brackets
  + Fix a bug in rfc822.c: Some headers weren't correctly parsed. (Jaime Velasco Juan)

- created package