Refactor the structure of source files:

* New src/ripple/crypto and src/ripple/protocol directories
* Merged src/ripple/common into src/ripple/basics
* Move resource/api files up a level
* Add headers for "include what you use"
* Normalized include guards
* Renamed to JsonFields.h
* Remove obsolete files
* Remove net.h unity header
* Remove resource.h unity header
* Removed some deprecated unity includes

src/ripple/app/data/DatabaseCon.cpp

@@ -17,6 +17,9 @@
 */
 //==============================================================================
 
+#include <ripple/app/data/DatabaseCon.h>
+#include <ripple/core/Config.h>
+
 namespace ripple {
 
 DatabaseCon::DatabaseCon (std::string const& strName, const char* initStrings[], int initCount)

src/ripple/app/data/DatabaseCon.h

@@ -21,12 +21,15 @@
 #define RIPPLE_DATABASECON_H
 
 #include <mutex>
+#include <string>
 
 namespace ripple {
 
+class Database;
+
 // VFALCO NOTE This looks like a pointless class. Figure out
 //         what purpose it is really trying to serve and do it better.
-class DatabaseCon : beast::LeakChecked <DatabaseCon>
+class DatabaseCon
 {
 public:
     DatabaseCon (std::string const& name, const char* initString[], int countInit);

src/ripple/app/data/SqliteDatabase.cpp

@@ -17,6 +17,10 @@
 */
 //==============================================================================
 
+#include <ripple/app/data/SqliteDatabase.h>
+#include <ripple/core/JobQueue.h>
+#include <ripple/basics/Log.h>
+
 namespace ripple {
 
 SqliteStatement::SqliteStatement (SqliteDatabase* db, const char* sql, bool aux)

src/ripple/app/data/SqliteDatabase.h

@@ -21,6 +21,7 @@
 #define RIPPLE_SQLITEDATABASE_H_INCLUDED
 
 #include <beast/threads/Thread.h>
+#include <mutex>
 
 namespace ripple {
 
@@ -80,7 +81,7 @@ private:
     void run ();
     void runWal ();
 
-    typedef RippleMutex LockType;
+    typedef std::mutex LockType;
     typedef std::lock_guard <LockType> ScopedLockType;
     LockType m_walMutex;