Fix version scripts for some shallow clone situations (fix #1549) (#2608)

configure.ac

@@ -1,7 +1,4 @@
-m4_define([jq_version],
-          m4_esyscmd_s([(git rev-parse --verify -q jq-1.0 > /dev/null &&
-                        (git describe --tags --dirty --match 'jq-*'|sed 's/^jq-//')) ||
-                        echo `git rev-parse --abbrev-ref HEAD`-`git describe --always --dirty`])))
+m4_define([jq_version], m4_esyscmd_s([scripts/version])))
 
 AC_INIT([jq], [jq_version], [https://github.com/jqlang/jq/issues],
              [jq], [https://jqlang.github.io/jq])