Remove mirror:: and ArtMethod deps in utils.{h,cc}

The latest chapter in the ongoing saga of attempting to dump a DEX
file without having to start a whole runtime instance.  This episode
finds us removing references to ArtMethod/ArtField/mirror.

One aspect of this change that I would like to call out specfically
is that the utils versions of the "Pretty*" functions all were written
to accept nullptr as an argument.  I have split these functions up as
follows:
1) an instance method, such as PrettyClass that obviously requires
this != nullptr.
2) a static method, that behaves the same way as the util method, but
calls the instance method if p != nullptr.
This requires using a full class qualifier for the static methods,
which isn't exactly beautiful.  I have tried to remove as many cases
as possible where it was clear p != nullptr.

Bug: 22322814
Test: test-art-host
Change-Id: I21adee3614aa697aa580cd1b86b72d9206e1cb24
diff --git a/compiler/optimizing/intrinsics.cc b/compiler/optimizing/intrinsics.cc
index 412ccfc..8327a4c 100644
--- a/compiler/optimizing/intrinsics.cc
+++ b/compiler/optimizing/intrinsics.cc
@@ -146,7 +146,7 @@
           if (!CheckInvokeType(intrinsic, invoke)) {
             LOG(WARNING) << "Found an intrinsic with unexpected invoke type: "
                 << intrinsic << " for "
-                << PrettyMethod(invoke->GetDexMethodIndex(), invoke->GetDexFile())
+                << invoke->GetDexFile().PrettyMethod(invoke->GetDexMethodIndex())
                 << invoke->DebugName();
           } else {
             invoke->SetIntrinsic(intrinsic,