Add lint checks: String format, Casts, Security, Imports, /sdcard

This changeset adds several new Java parsetree-based lint detectors:

(1) String format checker. This checks several issues related to
    formatting strings (%1$s), such as
    - Is the string format valid?
    - Is the string format consistent between different translations,
      e.g. if argument #1 is of type "s" in locale A, is it also of
      type "s" in locale B?
    - Is the string format being called from Java with arguments of
      the right type?
    - Are strings which are not supposed to be formatted (e.g. ends
      with a %) passed to String.format?

(2) View Cast checker. Looks at the views associated with specific
    id's in layouts, and makes sure that any casts to views returned
    by findViewById in Java is cast-compatible with the type in the
    layout. For example, if you have a layout containing a <Button
    id="foo">, then a cast to an EditText of findViewById(R.id.foo)
    would be invalid.

(3) A security check which flags file creation calls that pass a
    context of world-writeable.

(4) An "import android.R" checker. This looks for "import android.R"
    in .java files and warns that this is potentially confusing.

(5) A hardcoded "/sdcard" string checker which looks for this prefix
    in string literals and when found warns that the method
    Environment.getExternalStorageDirectory().getPath() should be
    used instead.

Change-Id: I14a4656f0ff6a58f25cde1b4bb23f6c47c47fdba

1 files changed, 1 insertions, 0 deletions

diff --git a/eclipse/dictionary.txt b/eclipse/dictionary.txt
index a70810f..3beaa53 100644
--- a/eclipse/dictionary.txt
+++ b/eclipse/dictionary.txt
@@ -235,6 +235,7 @@ scrollable
 scrollbar
 scrollbars
 scrubbing
+sdcard
 sdk
 se
 searchable