Replace includes of boost/filesystem.h with fs.h

This is step one in abstracting the use of boost::filesystem.

src/test/test_bitcoin.cpp

@@ -7,6 +7,7 @@
 #include "chainparams.h"
 #include "consensus/consensus.h"
 #include "consensus/validation.h"
+#include "fs.h"
 #include "key.h"
 #include "validation.h"
 #include "miner.h"
@@ -24,7 +25,6 @@
 
 #include <memory>
 
-#include <boost/filesystem.hpp>
 #include <boost/thread.hpp>
 
 FastRandomContext insecure_rand_ctx(true);

src/test/test_bitcoin.h

@@ -6,12 +6,12 @@
 #define BITCOIN_TEST_TEST_BITCOIN_H
 
 #include "chainparamsbase.h"
+#include "fs.h"
 #include "key.h"
 #include "pubkey.h"
 #include "txdb.h"
 #include "txmempool.h"
 
-#include <boost/filesystem.hpp>
 #include <boost/thread.hpp>
 
 /** Basic testing setup.

src/test/testutil.cpp

@@ -8,7 +8,7 @@
 #include <shlobj.h>
 #endif
 
-#include <boost/filesystem.hpp>
+#include "fs.h"
 
 boost::filesystem::path GetTempPath() {
     return boost::filesystem::temp_directory_path();

src/test/testutil.h

@@ -8,7 +8,7 @@
 #ifndef BITCOIN_TEST_TESTUTIL_H
 #define BITCOIN_TEST_TESTUTIL_H
 
-#include <boost/filesystem/path.hpp>
+#include "fs.h"
 
 boost::filesystem::path GetTempPath();