Sync stat fix patch with upstream, add commit info

tlp-stat-fix.patch

@@ -1,4 +1,14 @@
+commit 9498a85d1cedb78a38b54f243c9c4a3daad5bcc6
+Author: Thomas Koch <linrunner@gmx.net>
+Date:   Tue Feb 28 20:33:44 2017 +0100
+
+    tlp-stat: intercept non-existing or invalid charge values
+    
+    Reference:
+    * Issue #256: https://github.com/linrunner/TLP/issues/256
+
 diff --git a/tlp-stat.in b/tlp-stat.in
+index ca08527..8aeb6a6 100644
 --- a/tlp-stat.in
 +++ b/tlp-stat.in
 @@ -58,6 +58,15 @@ no_runtimepm=0
@@ -17,6 +27,15 @@ diff --git a/tlp-stat.in b/tlp-stat.in
  printparm () { # formatted output of sysfile - general
      # $1: format, $2: sysfile, $3: namsg, $4: cutoff
      local format="$1"
+@@ -257,7 +266,7 @@ check_ata_errors () { # check kernel log for ata errors
+         # count matching error lines
+         echo $( dmesg | egrep -c "${RE_ATA_ERROR}" 2> /dev/null )
+     else
+-        # no values in question configured 
++        # no values in question configured
+         echo "0"
+     fi
+ 
 @@ -1115,9 +1124,9 @@ if [ "$show_bat" = "1" ] || [ "$show_all" = "1" ]; then
                      echo