Factor cmLocalGenerator::Configure object max path

Much of the code in this method was dedicated to computing ObjectMaxPath
after configuring the directory.  We move this last step into its own
ComputeObjectMaxPath method for better organization.

Source/cmLocalGenerator.cxx

@@ -121,8 +121,15 @@ void cmLocalGenerator::Configure()
   // relative paths.
   this->UseRelativePaths = this->Makefile->IsOn("CMAKE_USE_RELATIVE_PATHS");
 
+  this->ComputeObjectMaxPath();
+
+  this->Configured = true;
+}
+
+//----------------------------------------------------------------------------
+void cmLocalGenerator::ComputeObjectMaxPath()
+{
   // Choose a maximum object file name length.
-  {
 #if defined(_WIN32) || defined(__CYGWIN__)
   this->ObjectPathMax = 250;
 #else
@@ -157,9 +164,6 @@ void cmLocalGenerator::Configure()
       }
     }
   this->ObjectMaxPathViolations.clear();
-  }
-
-  this->Configured = true;
 }
 
 void cmLocalGenerator::SetupPathConversions()

Source/cmLocalGenerator.h

@@ -352,6 +352,7 @@ protected:
 
   std::string& CreateSafeUniqueObjectFileName(const char* sin,
                                               std::string const& dir_max);
+  void ComputeObjectMaxPath();
 
   void ConfigureRelativePaths();
   std::string FindRelativePathTopSource();