Rename cmFileTimeCache::FileTimesDiffer to cmFileTimeCache::DifferS

Source/cmFileCopier.cxx

@@ -532,7 +532,7 @@ bool cmFileCopier::InstallFile(const std::string& fromFile,
   bool copy = true;
   if (!this->Always) {
     // If both files exist with the same time do not copy.
-    if (!this->FileTimes.FileTimesDiffer(fromFile, toFile)) {
+    if (!this->FileTimes.DifferS(fromFile, toFile)) {
       copy = false;
     }
   }

Source/cmFileTimeCache.cxx

@@ -44,8 +44,7 @@ bool cmFileTimeCache::FileTimeCompare(std::string const& f1,
   return false;
 }
 
-bool cmFileTimeCache::FileTimesDiffer(std::string const& f1,
-                                      std::string const& f2)
+bool cmFileTimeCache::DifferS(std::string const& f1, std::string const& f2)
 {
   // Get the modification time for each file.
   cmFileTime ft1, ft2;

Source/cmFileTimeCache.h

@@ -42,7 +42,7 @@ public:
    * @return true unless both files exist and have modification times less
    *         than 1 second apart.
    */
-  bool FileTimesDiffer(std::string const& f1, std::string const& f2);
+  bool DifferS(std::string const& f1, std::string const& f2);
 
 private:
   typedef std::unordered_map<std::string, cmFileTime> FileTimeMap;