Fix warnings in libutils headers

system/core/include is included in the global include path using
-isystem, which hides all warnings.  Fix warnings in libutils
headers in preparation for moving from -isystem to -I.

- Fix implicit cast from int64_t to long in Condition.h.  Remove
  the __LP64__ check and always compare against LONG_MAX before
  casting.
- Fix implicit cast from size_t to ssize_t in KeyedVector.h
- Fix -Wshadow-field-in-constructor warnings in Looper.h and RefBase.h
- Move destructors for MessageHandler and LooperCallback to Looper.cpp
  and ReferenceRenamer and VirtualLightRefBase to RefBase.cpp to prevent
  vtables in every compilation unit.
- Declare template variables in Singleton.h
- Fix old-style casts in StrongPointer.h and TypeHelpers.h
- Use template metaprogramming in TypeHelpers.h to avoid warnings on
  memmove on non-trivial types.
- Add an assignment operator to key_value_pair_t to complete
  rule-of-three
- Use memcpy instead of dereferencing a reinterpret_casted pointer to
  treat the bits of a float or double as int32_t or int64_t
- Escape unicode sequences inside doxygen comments between \code and
  \endcode
- Remove WIN32 ZD definition in Compat.h, %zd works fine with mingw
- Fix WIN32 printf warnings in Filemap.cpp
- Initialize mNullValue with 0 in LruCache.h, some of the tests use a
  non-pointer type for TValue.

Test: m -j native
Bug: 31492149
Change-Id: I385a05a3ca01258e44fe3b37ef77e4aaff547b26
diff --git a/include/utils/RefBase.h b/include/utils/RefBase.h
index 3c318c4..c6466d3 100644
--- a/include/utils/RefBase.h
+++ b/include/utils/RefBase.h
@@ -212,7 +212,7 @@
     // subclasses; we have to make it protected to guarantee that it
     // cannot be called from this base class (and to make strict compilers
     // happy).
-    ~ReferenceRenamer() { }
+    ~ReferenceRenamer();
 public:
     virtual void operator()(size_t i) const = 0;
 };
@@ -372,7 +372,7 @@
 // destructor to eliminate the template requirement of LightRefBase
 class VirtualLightRefBase : public LightRefBase<VirtualLightRefBase> {
 public:
-    virtual ~VirtualLightRefBase() {}
+    virtual ~VirtualLightRefBase();
 };
 
 // ---------------------------------------------------------------------------
@@ -646,42 +646,42 @@
     // a template<typename TYPE inherits RefBase> template...
 
     template<typename TYPE> static inline
-    void move_references(sp<TYPE>* d, sp<TYPE> const* s, size_t n) {
+    void move_references(sp<TYPE>* dest, sp<TYPE> const* src, size_t n) {
 
         class Renamer : public ReferenceRenamer {
-            sp<TYPE>* d;
-            sp<TYPE> const* s;
+            sp<TYPE>* d_;
+            sp<TYPE> const* s_;
             virtual void operator()(size_t i) const {
                 // The id are known to be the sp<>'s this pointer
-                TYPE::renameRefId(d[i].get(), &s[i], &d[i]);
+                TYPE::renameRefId(d_[i].get(), &s_[i], &d_[i]);
             }
         public:
-            Renamer(sp<TYPE>* d, sp<TYPE> const* s) : d(d), s(s) { }
+            Renamer(sp<TYPE>* d, sp<TYPE> const* s) : d_(d), s_(s) { }
             virtual ~Renamer() { }
         };
 
-        memmove(d, s, n*sizeof(sp<TYPE>));
-        TYPE::renameRefs(n, Renamer(d, s));
+        memmove(dest, src, n*sizeof(sp<TYPE>));
+        TYPE::renameRefs(n, Renamer(dest, src));
     }
 
 
     template<typename TYPE> static inline
-    void move_references(wp<TYPE>* d, wp<TYPE> const* s, size_t n) {
+    void move_references(wp<TYPE>* dest, wp<TYPE> const* src, size_t n) {
 
         class Renamer : public ReferenceRenamer {
-            wp<TYPE>* d;
-            wp<TYPE> const* s;
+            wp<TYPE>* d_;
+            wp<TYPE> const* s_;
             virtual void operator()(size_t i) const {
                 // The id are known to be the wp<>'s this pointer
-                TYPE::renameRefId(d[i].get_refs(), &s[i], &d[i]);
+                TYPE::renameRefId(d_[i].get_refs(), &s_[i], &d_[i]);
             }
         public:
-            Renamer(wp<TYPE>* d, wp<TYPE> const* s) : d(d), s(s) { }
+            Renamer(wp<TYPE>* rd, wp<TYPE> const* rs) : d_(rd), s_(rs) { }
             virtual ~Renamer() { }
         };
 
-        memmove(d, s, n*sizeof(wp<TYPE>));
-        TYPE::renameRefs(n, Renamer(d, s));
+        memmove(dest, src, n*sizeof(wp<TYPE>));
+        TYPE::renameRefs(n, Renamer(dest, src));
     }
 };
 
@@ -712,7 +712,6 @@
     ReferenceMover::move_references(d, s, n);
 }
 
-
 }; // namespace android
 
 // ---------------------------------------------------------------------------