event/{Coarse,Fine,Far}TimerEvent: aliases for TimerEvent

Preparing for a variant of TimerEvent with coarse 1-second
granularity, but cheaper (with a timer wheel).

src/lib/curl/Global.hxx

@@ -31,7 +31,7 @@
 #define CURL_GLOBAL_HXX
 
 #include "Multi.hxx"
-#include "event/TimerEvent.hxx"
+#include "event/CoarseTimerEvent.hxx"
 #include "event/DeferEvent.hxx"
 
 class CurlSocket;
@@ -45,7 +45,7 @@ class CurlGlobal final {
 
 	DeferEvent defer_read_info;
 
-	TimerEvent timeout_event;
+	CoarseTimerEvent timeout_event;
 
 public:
 	explicit CurlGlobal(EventLoop &_loop);

src/lib/nfs/Connection.hxx

@@ -22,7 +22,7 @@
 
 #include "Cancellable.hxx"
 #include "event/SocketEvent.hxx"
-#include "event/TimerEvent.hxx"
+#include "event/CoarseTimerEvent.hxx"
 #include "event/DeferEvent.hxx"
 #include "util/Compiler.h"
 
@@ -95,7 +95,7 @@ class NfsConnection {
 
 	SocketEvent socket_event;
 	DeferEvent defer_new_lease;
-	TimerEvent mount_timeout_event;
+	CoarseTimerEvent mount_timeout_event;
 
 	std::string server, export_name;
 

src/lib/systemd/Watchdog.hxx

@@ -30,7 +30,7 @@
 #ifndef SYSTEMD_WATCHDOG_HXX
 #define SYSTEMD_WATCHDOG_HXX
 
-#include "event/TimerEvent.hxx"
+#include "event/FineTimerEvent.hxx"
 
 namespace Systemd {
 
@@ -40,7 +40,7 @@ namespace Systemd {
  * not enabled, this class does nothing.
  */
 class Watchdog {
-	TimerEvent timer;
+	FineTimerEvent timer;
 
 	Event::Duration interval;