cmVisualStudioGeneratorOptions: Rename {IsDebug => UsingDebugInfo}

The latter name is more precise.

Source/cmLocalVisualStudio7Generator.cxx

@@ -1135,7 +1135,7 @@ void cmLocalVisualStudio7Generator::OutputBuildTool(
         cmStrCat(target->GetPDBDirectory(configName), '/', targetNames.PDB);
       fout << "\t\t\t\tProgramDatabaseFile=\""
            << this->ConvertToXMLOutputPathSingle(temp) << "\"\n";
-      if (targetOptions.IsDebug()) {
+      if (targetOptions.UsingDebugInfo()) {
         fout << "\t\t\t\tGenerateDebugInformation=\"true\"\n";
       }
       if (this->WindowsCEProject) {
@@ -1223,7 +1223,7 @@ void cmLocalVisualStudio7Generator::OutputBuildTool(
         target->GetPDBDirectory(configName));
       fout << "\t\t\t\tProgramDatabaseFile=\"" << path << "/"
            << targetNames.PDB << "\"\n";
-      if (targetOptions.IsDebug()) {
+      if (targetOptions.UsingDebugInfo()) {
         fout << "\t\t\t\tGenerateDebugInformation=\"true\"\n";
       }
       if (this->WindowsCEProject) {

Source/cmVisualStudio10TargetGenerator.cxx

@@ -1577,7 +1577,7 @@ void cmVisualStudio10TargetGenerator::WriteMSToolConfigurationValuesManaged(
 
   Options& o = *(this->ClOptions[config]);
 
-  if (o.IsDebug()) {
+  if (o.UsingDebugInfo()) {
     e1.Element("DebugSymbols", "true");
     e1.Element("DefineDebug", "true");
   }
@@ -3581,7 +3581,7 @@ void cmVisualStudio10TargetGenerator::WriteClOptions(
     // without value so PDBs don't get generated uselessly. Each tag
     // goes on its own line because Visual Studio corrects it this
     // way when saving the project after CMake generates it.
-    if (!clOptions.IsDebug()) {
+    if (!clOptions.UsingDebugInfo()) {
       Elem e3(e2, "DebugInformationFormat");
       e3.SetHasElements();
     }

Source/cmVisualStudioGeneratorOptions.cxx

@@ -110,7 +110,7 @@ void cmVisualStudioGeneratorOptions::SetVerboseMakefile(bool verbose)
   }
 }
 
-bool cmVisualStudioGeneratorOptions::IsDebug() const
+bool cmVisualStudioGeneratorOptions::UsingDebugInfo() const
 {
   if (this->CurrentTool != CSharpCompiler) {
     return this->FlagMap.find("DebugInformationFormat") != this->FlagMap.end();

Source/cmVisualStudioGeneratorOptions.h

@@ -65,7 +65,7 @@ public:
 
   void FixManifestUACFlags();
 
-  bool IsDebug() const;
+  bool UsingDebugInfo() const;
   bool IsWinRt() const;
   bool IsManaged() const;
   // Write options to output.