libpng and osprober update

system/boot/os-prober/pspec.xml

@@ -12,7 +12,7 @@
         <IsA>app:console</IsA>
         <Summary>Utility to detect other OSes on a set of drives</Summary>
         <Description>os-probe detects other OSes available on a system and outputs the results in a generic machine-readable format. Support for new OSes and Linux distributions can be added easily.</Description>
-        <Archive sha1sum="63114ccf7d2ed2f7af3db100bf992eac3c8576a8" type="tarxz">http://http.debian.net/debian/pool/main/o/os-prober/os-prober_1.65.tar.xz</Archive>
+        <Archive sha1sum="7d603d603208fe8b065f84da62dcfb6ee965a9eb" type="tarxz">http://http.debian.net/debian/pool/main/o/os-prober/os-prober_1.71.tar.xz</Archive>
     </Source>
     <Package>
         <Name>os-prober</Name>
@@ -25,6 +25,13 @@
         </Files>
     </Package>
     <History>
+        <Update release="6">
+            <Date>2016-03-13</Date>
+            <Version>1.71</Version>
+            <Comment>Version bump.</Comment>
+            <Name>Ertuğrul Erata</Name>
+            <Email>ertugrulerata@gmail.com</Email>
+        </Update>
         <Update release="5">
             <Date>2015-05-03</Date>
             <Version>1.65</Version>