Revert^2 "Remove support for Valgrind in ART."

- Disable test configuration art-gtest-valgrind64
  (art-gtest-valgrind32 was already disabled).
- Remove Makefile logic regarding testing with Valgrind.
- Remove occurrences of `TEST_DISABLED_FOR_MEMORY_TOOL_VALGRIND`.
- Replace occurrences of `TEST_DISABLED_FOR_MEMORY_TOOL_ASAN` with
  `TEST_DISABLED_FOR_MEMORY_TOOL`.
- Replace the potentially dynamically evaluated
  `RUNNING_ON_MEMORY_TOOL` expression with constant
  `kRunningOnMemoryTool`.
- Simplify and fold the logic of
  `art::ArenaAllocatorMemoryToolCheckImpl` and
  `art::ArenaAllocatorMemoryToolCheck` into
  `art::ArenaAllocatorMemoryTool`.
- Adjust comments regarding memory tools.
- Remove Valgrind suppression files.
- Remove `--callgrind` option from tools/art.

This reverts commit 8b362a87d52a6668ffd2283ef6ffc274315f41c8.

Change-Id: I23c76845e6ccf766f19b22b58a0d5161f60842a9
Test: art/test.py
Test: art/test/testrunner/run_build_test_target.py art-asan
Bug: 77856586
Bug: 29282211
diff --git a/runtime/runtime.cc b/runtime/runtime.cc
index 1e327fc..6d10a22 100644
--- a/runtime/runtime.cc
+++ b/runtime/runtime.cc
@@ -240,7 +240,7 @@
       exit_(nullptr),
       abort_(nullptr),
       stats_enabled_(false),
-      is_running_on_memory_tool_(RUNNING_ON_MEMORY_TOOL),
+      is_running_on_memory_tool_(kRunningOnMemoryTool),
       instrumentation_(),
       main_thread_group_(nullptr),
       system_thread_group_(nullptr),
@@ -1362,8 +1362,8 @@
     case InstructionSet::kMips:
     case InstructionSet::kMips64:
       implicit_null_checks_ = true;
-      // Installing stack protection does not play well with valgrind.
-      implicit_so_checks_ = !(RUNNING_ON_MEMORY_TOOL && kMemoryToolIsValgrind);
+      // Historical note: Installing stack protection was not playing well with Valgrind.
+      implicit_so_checks_ = true;
       break;
     default:
       // Keep the defaults.
@@ -1378,8 +1378,8 @@
       // These need to be in a specific order.  The null point check handler must be
       // after the suspend check and stack overflow check handlers.
       //
-      // Note: the instances attach themselves to the fault manager and are handled by it. The manager
-      //       will delete the instance on Shutdown().
+      // Note: the instances attach themselves to the fault manager and are handled by it. The
+      //       manager will delete the instance on Shutdown().
       if (implicit_suspend_checks_) {
         new SuspensionHandler(&fault_manager);
       }