Update to 1.49.  Changes:
31-Aug-2009
diffstat 1.49

improve lzma support, add support for xz (patch by Eric Blake).

add special case for no-newline message from some diff's (Ubuntu
#269895).

improve configure check for getopt header.

add configure special case for HPUX 11 with _XOPEN_SOURCE definition.

update config.guess, config.sub

(snj)