Add info to the bytecode.txt file.

This additional info should be enough to start generating the
tables used by InstrUtils, though this patch doesn't do anything
more than check the syntax of the new data.

Change-Id: Id823518d5a2edaea3397561a53070cc605ad4bf1
diff --git a/dx/etc/run-opcode-gen b/dx/etc/run-opcode-gen
index 591438f..0b93064 100755
--- a/dx/etc/run-opcode-gen
+++ b/dx/etc/run-opcode-gen
@@ -27,11 +27,12 @@
         prog="${progdir}/${newProg}"
     fi
 done
-oldwd=`pwd`
 progdir=`dirname "${prog}"`
+cd "${progdir}"
+progdir=`pwd`
 
 # Be in the parent of the progdir when running the rest of the script.
-cd "${progdir}/.."
+cd ".."
 
 ${progdir}/opcode-gen src/com/android/dx/dex/code/DalvOps.java
 ${progdir}/opcode-gen src/com/android/dx/dex/code/Dops.java