Try to make Appveyor happy

lib/importproject.h

@@ -112,47 +112,47 @@ private:
 
 
 namespace CppcheckXml {
-constexpr char ProjectElementName[] = "project";
-constexpr char ProjectVersionAttrib[] = "version";
-constexpr char ProjectFileVersion[] = "1";
-constexpr char BuildDirElementName[] = "builddir";
-constexpr char ImportProjectElementName[] = "importproject";
-constexpr char AnalyzeAllVsConfigsElementName[] = "analyze-all-vs-configs";
-constexpr char IncludeDirElementName[] = "includedir";
-constexpr char DirElementName[] = "dir";
-constexpr char DirNameAttrib[] = "name";
-constexpr char DefinesElementName[] = "defines";
-constexpr char DefineName[] = "define";
-constexpr char DefineNameAttrib[] = "name";
-constexpr char UndefinesElementName[] = "undefines";
-constexpr char UndefineName[] = "undefine";
-constexpr char PathsElementName[] = "paths";
-constexpr char PathName[] = "dir";
-constexpr char PathNameAttrib[] = "name";
-constexpr char RootPathName[] = "root";
-constexpr char RootPathNameAttrib[] = "name";
-constexpr char IgnoreElementName[] = "ignore";
-constexpr char IgnorePathName[] = "path";
-constexpr char IgnorePathNameAttrib[] = "name";
-constexpr char ExcludeElementName[] = "exclude";
-constexpr char ExcludePathName[] = "path";
-constexpr char ExcludePathNameAttrib[] = "name";
-constexpr char LibrariesElementName[] = "libraries";
-constexpr char LibraryElementName[] = "library";
-constexpr char PlatformElementName[] = "platform";
-constexpr char SuppressionsElementName[] = "suppressions";
-constexpr char SuppressionElementName[] = "suppression";
-constexpr char AddonElementName[] = "addon";
-constexpr char AddonsElementName[] = "addons";
-constexpr char ToolElementName[] = "tool";
-constexpr char ToolsElementName[] = "tools";
-constexpr char TagsElementName[] = "tags";
-constexpr char TagElementName[] = "tag";
-constexpr char CheckHeadersElementName[] = "check-headers";
-constexpr char CheckUnusedTemplatesElementName[] = "check-unused-templates";
-constexpr char MaxCtuDepthElementName[] = "max-ctu-depth";
-constexpr char CheckUnknownFunctionReturn[] = "check-unknown-function-return-values";
-constexpr char Name[] = "name";
+const char ProjectElementName[] = "project";
+const char ProjectVersionAttrib[] = "version";
+const char ProjectFileVersion[] = "1";
+const char BuildDirElementName[] = "builddir";
+const char ImportProjectElementName[] = "importproject";
+const char AnalyzeAllVsConfigsElementName[] = "analyze-all-vs-configs";
+const char IncludeDirElementName[] = "includedir";
+const char DirElementName[] = "dir";
+const char DirNameAttrib[] = "name";
+const char DefinesElementName[] = "defines";
+const char DefineName[] = "define";
+const char DefineNameAttrib[] = "name";
+const char UndefinesElementName[] = "undefines";
+const char UndefineName[] = "undefine";
+const char PathsElementName[] = "paths";
+const char PathName[] = "dir";
+const char PathNameAttrib[] = "name";
+const char RootPathName[] = "root";
+const char RootPathNameAttrib[] = "name";
+const char IgnoreElementName[] = "ignore";
+const char IgnorePathName[] = "path";
+const char IgnorePathNameAttrib[] = "name";
+const char ExcludeElementName[] = "exclude";
+const char ExcludePathName[] = "path";
+const char ExcludePathNameAttrib[] = "name";
+const char LibrariesElementName[] = "libraries";
+const char LibraryElementName[] = "library";
+const char PlatformElementName[] = "platform";
+const char SuppressionsElementName[] = "suppressions";
+const char SuppressionElementName[] = "suppression";
+const char AddonElementName[] = "addon";
+const char AddonsElementName[] = "addons";
+const char ToolElementName[] = "tool";
+const char ToolsElementName[] = "tools";
+const char TagsElementName[] = "tags";
+const char TagElementName[] = "tag";
+const char CheckHeadersElementName[] = "check-headers";
+const char CheckUnusedTemplatesElementName[] = "check-unused-templates";
+const char MaxCtuDepthElementName[] = "max-ctu-depth";
+const char CheckUnknownFunctionReturn[] = "check-unknown-function-return-values";
+const char Name[] = "name";
 }
 
 /// @}