Update xf86-input-mouse to 1.9.0.

while here, revive minimal pert of patches lost during update to 1.8.1,
for WSMouse support of NetBSD.

[ANNOUNCE] xf86-input-mouse 1.9.0
No big changes, but since we removed maintainer mode we might as well bump
the minor version.

Adam Jackson (1):
      configure: Drop AM_MAINTAINER_MODE

Colin Walters (1):
      autogen.sh: Implement GNOME Build API

Peter Hutterer (3):
      Fix compilation error with EXTMOUSEDEBUG on
      Use signal-safe logging if available
      mouse 1.9.0

(obache)