Remove dependency from platform files on v8.h

src/platform-solaris.cc

Index: src/platform-solaris.cc
diff --git a/src/platform-solaris.cc b/src/platform-solaris.cc
index 931bc1166ac3598a250caee09f564b21c8dd77fc..4803531b733e93c8fbc04242184a7e3d1a1507c5 100644
--- a/src/platform-solaris.cc
+++ b/src/platform-solaris.cc
@@ -23,12 +23,12 @@
 #include <ucontext.h>  // walkstack(), getcontext()
 #include <unistd.h>  // getpagesize(), usleep()
 
+#include <cmath>
 
 #undef MAP_TYPE
 
-#include "src/v8.h"
-
 #include "src/platform.h"
+#include "src/utils.h"
 
 
 // It seems there is a bug in some Solaris distributions (experienced in
@@ -165,8 +165,8 @@ VirtualMemory::VirtualMemory(size_t size, size_t alignment)
                            kMmapFdOffset);
   if (reservation == MAP_FAILED) return;
 
-  Address base = static_cast<Address>(reservation);
-  Address aligned_base = RoundUp(base, alignment);
+  uint8_t* base = static_cast<uint8_t*>(reservation);
+  uint8_t* aligned_base = RoundUp(base, alignment);
   ASSERT_LE(base, aligned_base);
 
   // Unmap extra memory reserved before and after the desired block.