Make building an XPI with spaces in its name possible.

common/make_jar.sh

@@ -2,7 +2,7 @@
 set -e
 
 fromrepo=
-if [ $1 = -r ]; then shift; fromrepo=1; fi
+if [ "$1" = -r ]; then shift; fromrepo=1; fi
 
 top=$(pwd)
 jar=$1
@@ -15,7 +15,7 @@ files="$@"
 HG=${HG:-hg}
 
 stage="$top/${jar%.*}"
-mkdir -p $stage
+mkdir -p "$stage"
 
 sed=$(which sed)
 if [ "xoo" = x$(echo foo | sed -E 's/f(o)/\1/' 2>/dev/null) ]
@@ -86,9 +86,9 @@ done
 
 (
     set -e;
-    cd $stage;
-    case $jar in
-    (*/) if [ "$stage" != "$jar" ]; then mv -- * $jar; fi;;
+    cd "$stage";
+    case "$jar" in
+    (*/) if [ "$stage" != "$jar" ]; then mv -- * "$jar"; fi;;
     (*)  zip -9r "$jar" -- *;;
     esac
 ) || exit 1