FIX: declaration of quvi_new()

qfunc.h:28:3: warning: function declaration isn't a prototype

w/ [-Wstrict-prototypes]

Signed-off-by: Bastien Nocera <hadess@hadess.net>
Require a2x when building from git

Otherwise make in the doc/man7 directory will fail as quvi-object.7 is
missing.

Signed-off-by: Bastien Nocera <hadess@hadess.net>
Signed-off-by: Toni Gundogdu <legatvs@gmail.com>
configure.ac: Add a vim modeline

Signed-off-by: Toni Gundogdu <legatvs@gmail.com>