envesetup: mmm/mmma: fix for zsh

Fix broken argument handling due to differnt word-splitting behavior
in zsh [1]. Zsh arrays should be explicitly defined.

 - [1] http://zsh.sourceforge.net/FAQ/zshfaq03.html

Change-Id: Ic299c1952384001e374c64caebbb23e9792fddf2
diff --git a/envsetup.sh b/envsetup.sh
index eeb6534..3384211 100644
--- a/envsetup.sh
+++ b/envsetup.sh
@@ -902,8 +902,15 @@
         local ARGS=
         local DIR TO_CHOP
         local GET_INSTALL_PATH=
-        local DASH_ARGS=$(echo "$@" | awk -v RS=" " -v ORS=" " '/^-.*$/')
-        local DIRS=$(echo "$@" | awk -v RS=" " -v ORS=" " '/^[^-].*$/')
+
+        if [ "$(__detect_shell)" == "zsh" ]; then
+            set -lA DASH_ARGS $(echo "$@" | awk -v RS=" " -v ORS=" " '/^-.*$/')
+            set -lA DIRS $(echo "$@" | awk -v RS=" " -v ORS=" " '/^[^-].*$/')
+        else
+            local DASH_ARGS=$(echo "$@" | awk -v RS=" " -v ORS=" " '/^-.*$/')
+            local DIRS=$(echo "$@" | awk -v RS=" " -v ORS=" " '/^[^-].*$/')
+        fi
+
         for DIR in $DIRS ; do
             MODULES=`echo $DIR | sed -n -e 's/.*:\(.*$\)/\1/p' | sed 's/,/ /'`
             if [ "$MODULES" = "" ]; then
@@ -966,8 +973,13 @@
   local T=$(gettop)
   local DRV=$(getdriver $T)
   if [ "$T" ]; then
-    local DASH_ARGS=$(echo "$@" | awk -v RS=" " -v ORS=" " '/^-.*$/')
-    local DIRS=$(echo "$@" | awk -v RS=" " -v ORS=" " '/^[^-].*$/')
+    if [ "$(__detect_shell)" == "zsh" ]; then
+        set -lA DASH_ARGS $(echo "$@" | awk -v RS=" " -v ORS=" " '/^-.*$/')
+        set -lA DIRS $(echo "$@" | awk -v RS=" " -v ORS=" " '/^[^-].*$/')
+    else
+        local DASH_ARGS=$(echo "$@" | awk -v RS=" " -v ORS=" " '/^-.*$/')
+        local DIRS=$(echo "$@" | awk -v RS=" " -v ORS=" " '/^[^-].*$/')
+    fi
     local MY_PWD=`PWD= /bin/pwd`
     if [ "$MY_PWD" = "$T" ]; then
       MY_PWD=