Symbolize script: make dash-compatible and pull vdex file for oatdump.

Make dash-compatible.
Check result on Linux 4.15.0-91-generic #92~16.04.1-Ubuntu is
shown as follows:
  $ shellcheck -s sh art/tools/symbolize.sh
  In art/tools/symbolize.sh line 29:
    function one() {
    ^-- SC2112: 'function' keyword is non-standard. Delete it.
  ...

Pull out vdex file for oatdump command.

Test: bash symbolize.sh
Test: bash --posix symbolize.sh
Test: dash symbolize.sh

Change-Id: I7374b4f6ebd525ac064ac5505e88384eadd16255
diff --git a/tools/symbolize.sh b/tools/symbolize.sh
index f5686e6..2b6a5a1 100755
--- a/tools/symbolize.sh
+++ b/tools/symbolize.sh
@@ -26,7 +26,7 @@
 fi
 
 # Pull the file from the device and symbolize it.
-function one() {
+one() {
   echo $1 $2
   if [ "x$INTERACTIVE" = "xyes" ] ; then
     echo -n "What to do? [Y/n/q] "
@@ -39,17 +39,20 @@
     fi
   fi
   adb pull $1/$2 /tmp || exit 1
+  # pull vdex file for oatdump
+  vdex=${2%.*}.vdex
+  adb pull $1/$vdex /tmp/ 2>/dev/null
   mkdir -p $OUT/symbols/$1
   oatdump --symbolize=/tmp/$2 --output=$OUT/symbols/$1/$2
 }
 
 # adb shell find seems to output in DOS format (CRLF), which messes up scripting
-function adbshellstrip() {
+adbshellstrip() {
   adb shell $@ | sed 's/\r$//'
 }
 
 # Search in all of /data on device.
-function all() {
+all() {
   FILES=$(adbshellstrip find /data -name "'*.oat'" -o -name "'*.dex'" -o -name "'*.odex'")
   for FILE in $FILES ; do
     DIR=$(dirname $FILE)