Remove d- and v-flags

d-flag: There's no need for that, use the &-operator or fork+exec in a
        non-shell-context. In the latter case you get the PID for free.
v-flag: If you want to find out which version of a package is installed,
        consult your package manager. That's his job.

config.mk

@@ -11,7 +11,7 @@ X11INC = /usr/X11R6/include
 X11LIB = /usr/X11R6/lib
 
 # flags
-CPPFLAGS = -I$(X11INC) -DVERSION=\"$(VERSION)\" -D_DEFAULT_SOURCE
+CPPFLAGS = -I$(X11INC) -D_DEFAULT_SOURCE
 CFLAGS   = -std=c99 -pedantic -Wall -Wextra -Wno-unused -Os
 LDFLAGS  = -L$(X11LIB) -s
 LDLIBS   = -lX11