Scan for android namespace in manifest

android:minSdkVersion wasn't being correctly scanned because the
namespace was incorrect. This fixes that problem so packages aren't
generated as UTF-8 when minSdkVersion is less than 7.

Change-Id: I8f45d47ea886915da6a4770f6e111e6085d61bee
diff --git a/tools/aapt/Resource.cpp b/tools/aapt/Resource.cpp
index 88c5441..f8c5c38 100644
--- a/tools/aapt/Resource.cpp
+++ b/tools/aapt/Resource.cpp
@@ -221,12 +221,12 @@
            && code != ResXMLTree::BAD_DOCUMENT) {
         if (code == ResXMLTree::START_TAG) {
             if (strcmp16(block.getElementName(&len), uses_sdk16.string()) == 0) {
-                ssize_t minSdkIndex = block.indexOfAttribute("android",
+                ssize_t minSdkIndex = block.indexOfAttribute(RESOURCES_ANDROID_NAMESPACE,
                                                              "minSdkVersion");
                 if (minSdkIndex >= 0) {
                     String8 minSdkString = String8(
                         block.getAttributeStringValue(minSdkIndex, &len));
-		    bundle->setMinSdkVersion(minSdkString.string());
+                    bundle->setMinSdkVersion(minSdkString.string());
                 }
             }
         }