v8: fix build errors with g++ 6.1.1

Shifting a negative constant value is no longer allowed unless
the -fpermissive flag is in effect.  Fixes the following build
errors:

		../deps/v8/src/objects.h:5188:47: warning: left shift of negative value [-Wshift-negative-value]
			 static const int kElementsKindMask = (-1 << kElementsKindShift) &
		../deps/v8/src/objects.h:5188:44: error: left operand of shift expression '(-1 << 3)' is negative [-fpermissive]
			 static const int kElementsKindMask = (-1 << kElementsKindShift) &
		../deps/v8/src/objects.h:7376:39: warning: left shift of negative value [-Wshift-negative-value]
					 (~kMaxCachedArrayIndexLength << kArrayIndexHashLengthShift) |
		../deps/v8/src/objects.h:7376:36: error: left operand of shift expression '(-8 << 26)' is negative [-fpermissive]
					 (~kMaxCachedArrayIndexLength << kArrayIndexHashLengthShift) |

And:

		../deps/v8/src/liveedit.cc:205:44: warning: left shift of negative value [-Wshift-negative-value]
			 static const int kEmptyCellValue = -1 << kDirectionSizeBits;
		../deps/v8/src/liveedit.cc:205:41: error: left operand of shift expression '(-1 << 2)' is negative [-fpermissive]
			 static const int kEmptyCellValue = -1 << kDirectionSizeBits;

PR-URL: nodejs-private/node-private#62
Reviewed-By: Rod Vagg <rod@vagg.org>

Author: bnoordhuis

deps/v8/src/liveedit.cc

@@ -202,7 +202,8 @@ class Differencer {
 
   static const int kDirectionSizeBits = 2;
   static const int kDirectionMask = (1 << kDirectionSizeBits) - 1;
-  static const int kEmptyCellValue = -1 << kDirectionSizeBits;
+  static const int kEmptyCellValue =
+      static_cast<unsigned int>(-1) << kDirectionSizeBits;
 
   // This method only holds static assert statement (unfortunately you cannot
   // place one in class scope).

deps/v8/src/objects.h

@@ -5185,7 +5185,8 @@ class Map: public HeapObject {
   static const int kElementsKindBitCount = 5;
 
   // Derived values from bit field 2
-  static const int kElementsKindMask = (-1 << kElementsKindShift) &
+  static const int kElementsKindMask =
+      (static_cast<unsigned int>(-1) << kElementsKindShift) &
       ((1 << (kElementsKindShift + kElementsKindBitCount)) - 1);
   static const int8_t kMaximumBitField2FastElementValue = static_cast<int8_t>(
       (FAST_ELEMENTS + 1) << Map::kElementsKindShift) - 1;
@@ -7373,8 +7374,8 @@ class String: public HeapObject {
   STATIC_CHECK(IS_POWER_OF_TWO(kMaxCachedArrayIndexLength + 1));
 
   static const int kContainsCachedArrayIndexMask =
-      (~kMaxCachedArrayIndexLength << kArrayIndexHashLengthShift) |
-      kIsNotArrayIndexMask;
+      (static_cast<unsigned int>(~kMaxCachedArrayIndexLength)
+          << kArrayIndexHashLengthShift) | kIsNotArrayIndexMask;
 
   // Value of empty hash field indicating that the hash is not computed.
   static const int kEmptyHashField =

deps/v8/src/version.cc

@@ -35,7 +35,7 @@
 #define MAJOR_VERSION     3
 #define MINOR_VERSION     14
 #define BUILD_NUMBER      5
-#define PATCH_LEVEL       9
+#define PATCH_LEVEL       10
 // Use 1 for candidates and 0 otherwise.
 // (Boolean macro values are not supported by all preprocessors.)
 #define IS_CANDIDATE_VERSION 0