[notify] dhcpcd: update to 6.4.7

includes the following addition:

   *  Sanitise the following characters using svis(3) with VIS_CTYLE and
      VIS_OCTAL:
          | ^ & ; < > ( ) $ ` \ " ' <tab> <newline>
      This allows a non buggy unvis(1) to decode it 100% and stays compatible
      with how dhcpcd used to handle encoding on most platforms.
      For systems that supply svis(3) there is a code reduction, for systems
      that do not, a slight code increase. This change mitigates systems
      affected by bash CVE-2014-6271 and CVE-2014-7169.

Obviously the last one is quite important as DHCP/RA is one of the attack
vectors the "shellshock" bug.
As dhcpcd cannot know if /bin/sh is vulnerable (and as of now, bash is *still*
vulnerable), it sanitises all the important shell characters as noted in IEEE
Std 1003.1, 2004 Edition, 2. Shell Command Language, 2.2 Quoting with the
exception of the space character.

Full change log:
http://roy.marples.name/archives/dhcpcd-discuss/2014/0811.html

dhcpcd/.md5sum

@@ -1 +1 @@
-4272a7de51bf0ba2b5d4f602e7fa5691  dhcpcd-6.4.5.tar.bz2
+b2289237a5b666a11178a9517c3f1240  dhcpcd-6.4.7.tar.bz2

dhcpcd/Pkgfile

@@ -4,7 +4,7 @@
 # Depends on:  eudev
 
 name=dhcpcd
-version=6.4.5
+version=6.4.7
 release=1
 source=(http://roy.marples.name/downloads/dhcpcd/$name-$version.tar.bz2)