Xcode 4.3 compatibility checkin

The update compiler in Xcode 4.3 (and 4.4) requires lookups into dependant
bases of class templates to be qualified. This checkin fixes the issues
raised by the compiler by implementing the this-> recommendation from
the llvm page at http://clang.llvm.org/compatibility.html#dep_lookup_bases

Signed-off-by: Al Sutton <al@funkyandroid.com>
diff --git a/include/utils/KeyedVector.h b/include/utils/KeyedVector.h
index fcc3bcf..85535bd 100644
--- a/include/utils/KeyedVector.h
+++ b/include/utils/KeyedVector.h
@@ -122,7 +122,7 @@
 
 template<typename KEY, typename VALUE> inline
 const VALUE& KeyedVector<KEY,VALUE>::valueFor(const KEY& key) const {
-    ssize_t i = indexOfKey(key);
+    ssize_t i = this->indexOfKey(key);
     assert(i>=0);
     return mVector.itemAt(i).value;
 }
@@ -139,7 +139,7 @@
 
 template<typename KEY, typename VALUE> inline
 VALUE& KeyedVector<KEY,VALUE>::editValueFor(const KEY& key) {
-    ssize_t i = indexOfKey(key);
+    ssize_t i = this->indexOfKey(key);
     assert(i>=0);
     return mVector.editItemAt(i).value;
 }
@@ -190,7 +190,7 @@
 
 template<typename KEY, typename VALUE> inline
 const VALUE& DefaultKeyedVector<KEY,VALUE>::valueFor(const KEY& key) const {
-    ssize_t i = indexOfKey(key);
+    ssize_t i = this->indexOfKey(key);
     return i >= 0 ? KeyedVector<KEY,VALUE>::valueAt(i) : mDefault;
 }