make dist uses git archive

No more having to add files to a damn list.

Signed-off-by: William Giokas <1007380@gmail.com>
battery.h: change floats to doubles

Signed-off-by: William Giokas <1007380@gmail.com>
Fix config.mk for use with Arch

Arch users do not have to edit this anymore.

Signed-off-by: William Giokas <1007380@gmail.com>