Fix version for make dist on master

- Re-remove VERSION file and all traces of it
 - Pass a decent version indicator to AC_INIT (using git describe)

When we tag 1.4 this will produce 1.4 as the version string when
building on the HEAD of that tag.

setup.sh

@@ -14,7 +14,7 @@ if [ "clean" == "$1" ]; then
   rm -f jv_utf8_tables.gen.h lexer.c lexer.h parser.c parser.h
 elif [ "superclean" == "$1" ]; then
   # if autoconf errors during distcheck, it leaves files that need chmod'ing
-  ver=$(tr -d '\n' <VERSION)
+  ver=$(scripts/version|tr -d '\n')
   if [ "x${ver}" != "x" ]; then
     if [ -d jq-${ver} ]; then
       chmod -R u+w jq-${ver}