configure: Merge the libsane existence check with the soname check.
[wine] / dlls / winejoystick.drv /
drwxr-xr-x   ..
-rw-r--r-- 266 Makefile.in
-rw-r--r-- 14846 joystick.c
-rw-r--r-- 73 winejoystick.drv.spec