hplip: import from oldpackage and update to 3.18.6

hplip was split into subpackages:

* hplip-common: generic files
* hplip-sane:   sane backend
  - patched to remove cups deps used only for network scanners
* hplip-cups:   cups driver (currently disabled)

Signed-off-by: Luiz Angelo Daros de Luca <luizluca@gmail.com>

utils/hplip/patches/030-replace_unsafe_memcpy_with_memmove.patch

@@ -0,0 +1,15 @@
+https://bugs.launchpad.net/hplip/+bug/1672256
+
+memcpy should never be used with overlapping memory regions
+
+--- a/io/hpmud/musb.c
++++ b/io/hpmud/musb.c
+@@ -775,7 +775,7 @@ static int device_id(int fd, unsigned ch
+         len = size-1;   /* leave byte for zero termination */
+     if (len > 2)
+         len -= 2;
+-    memcpy(buffer, buffer+2, len);    /* remove length */
++    memmove(buffer, buffer+2, len);    /* remove length */
+     buffer[len]=0;
+     DBG("read actual device_id successfully fd=%d len=%d\n", fd, len);
+