Continue restructuring

build_all.xsh

@@ -0,0 +1,12 @@
+#!/usr/bin/env xonsh
+import argparse
+source ./test.xsh
+
+
+parser = argparse.ArgumentParser("Build all")
+parser.add_argument("--provider", choices=get_providers(), default="qemu.x86_64")
+args = parser.parse_args()
+
+
+for f in g`distros/**/build.xsh`:
+    ./@(f) --provider @(args.provider)