Update to tzdata2011m.

Fixes for Europe/Tiraspol (Moldova) and all four Ukrainian zones.

Also show the MD5 of the downloaded data, for comparison against the MD5
given in the announcement mails. (There's a plan to move to proper signing,
but that's not implemented on their end yet.)

Change-Id: I845e6f125c0f54298abadc643adfeca2eff4827a

libc/tools/zoneinfo/generate

@@ -37,6 +37,9 @@ if [ "$current_version" == "$latest_version" ]; then
   exit 1
 fi
 
+md5_sum=`md5sum $latest_archive`
+echo "MD5: $md5_sum"
+
 echo "Extracting $latest_version..."
 mkdir $latest_version
 tar -C $latest_version -zxf $latest_archive

libc/zoneinfo/zoneinfo.version

@@ -1 +1 @@
-2011l
+2011m