Let findSupportedAbi and hasRenderscriptBitcode scan only relevant files

for better performance. Without the optimization, these two functions
may check more than 100k file names in the pre-installed APK files,
which can take a few seconds to finish even on a recent device.

Bug: 21957428
Change-Id: I315fd3c6d5aa1076b993752525de449a9933de12
diff --git a/include/androidfw/ZipFileRO.h b/include/androidfw/ZipFileRO.h
index 1410d87..7680342 100644
--- a/include/androidfw/ZipFileRO.h
+++ b/include/androidfw/ZipFileRO.h
@@ -91,6 +91,7 @@
      * a matching call to endIteration with the same cookie.
      */
     bool startIteration(void** cookie);
+    bool startIteration(void** cookie, const char* prefix, const char* suffix);
 
     /**
      * Return the next entry in iteration order, or NULL if there are no more