add hamlib support

builder/stage4/21-pisdr-hamlib/00-run.sh

@@ -0,0 +1,16 @@
+#!/bin/bash -e
+
+on_chroot << EOF
+mkdir -p    "/home/${FIRST_USER_NAME}/PiSDR/Software"
+cd 		    "/home/${FIRST_USER_NAME}/PiSDR/Software"
+
+if [ ! -d "Hamlib" ]; then
+    git clone https://github.com/Hamlib/Hamlib.git
+fi
+
+cd Hamlib
+./bootstrap
+./configure --with-python-binding
+make -j$(nproc)
+ldconfig
+EOF