CDClient cleanup and optimization (#1023)

* CDClient cleanup and optimization

- Use static function to get table name
- Remove unused GetName function
- Replace above function with a static GetTableName function
- Remove verbose comments
- Remove verbose initializers
- Remove need to specify table name when getting a table by name
- Remove unused typedef for mac and linux

* Re-add unused table

Convert tables to singletons

- Convert all CDClient tables to singletons
- Move Singleton.h to dCommon
- Reduce header clutter in CDClientManager

dDatabase/Tables/CDComponentsRegistryTable.h

@@ -3,12 +3,7 @@
 // Custom Classes
 #include "CDTable.h"
 
-/*!
-  \file CDComponentsRegistryTable.hpp
-  \brief Contains data for the ComponentsRegistry table
- */
 enum class eReplicaComponentType : uint32_t;
- //! ComponentsRegistry Entry Struct
 struct CDComponentsRegistry {
 	unsigned int id;                    //!< The LOT is used as the ID
 	eReplicaComponentType component_type;        //!< See ComponentTypes enum for values
@@ -16,25 +11,11 @@ struct CDComponentsRegistry {
 };
 
 
-//! ComponentsRegistry table
-class CDComponentsRegistryTable : public CDTable {
+class CDComponentsRegistryTable : public CDTable<CDComponentsRegistryTable> {
 private:
-	//std::vector<CDComponentsRegistry> entries;
 	std::map<uint64_t, uint32_t> mappedEntries; //id, component_type, component_id
 
 public:
-
-	//! Constructor
-	CDComponentsRegistryTable(void);
-
-	//! Destructor
-	~CDComponentsRegistryTable(void);
-
-	//! Returns the table's name
-	/*!
-	  \return The table name
-	 */
-	std::string GetName(void) const override;
-
+	CDComponentsRegistryTable();
 	int32_t GetByIDAndType(uint32_t id, eReplicaComponentType componentType, int32_t defaultValue = 0);
 };