Code Cleanup

- Renamed files task.h -> main.h, task.cpp -> main.cpp.  This is to
  prepare for the next rename, which addresses the OpenBSD bug.
- Removed utf8.h, utf8.cpp from Makefile.am, which were inadvertantly
  added.

src/tests/autocomplete.t.cpp

@@ -27,7 +27,7 @@
 #include <iostream>
 #include <test.h>
 #include <util.h>
-#include <task.h>
+#include <main.h>
 
 Context context;
 

src/tests/filt.t.cpp

@@ -24,7 +24,7 @@
 //     USA
 //
 ////////////////////////////////////////////////////////////////////////////////
-#include "task.h"
+#include "main.h"
 #include "test.h"
 #include "Filter.h"
 #include "T2.h"

src/tests/parse.t.cpp

@@ -25,7 +25,7 @@
 //
 ////////////////////////////////////////////////////////////////////////////////
 #include <iostream>
-#include "task.h"
+#include "main.h"
 #include "text.h"
 #include "test.h"
 

src/tests/t.benchmark.t.cpp

@@ -26,7 +26,7 @@
 ////////////////////////////////////////////////////////////////////////////////
 #include <sys/time.h>
 #include "T.h"
-#include "task.h"
+#include "main.h"
 #include "test.h"
 
 Context context;

src/tests/t.t.cpp

@@ -26,7 +26,7 @@
 ////////////////////////////////////////////////////////////////////////////////
 #include "TDB.h"
 #include "T.h"
-#include "task.h"
+#include "main.h"
 #include "test.h"
 
 Context context;

src/tests/t2.t.cpp

@@ -24,7 +24,7 @@
 //     USA
 //
 ////////////////////////////////////////////////////////////////////////////////
-#include "task.h"
+#include "main.h"
 #include "test.h"
 
 Context context;

src/tests/tdb.t.cpp

@@ -28,7 +28,7 @@
 #include <unistd.h>
 
 #include "TDB.h"
-#include "task.h"
+#include "main.h"
 #include "test.h"
 
 Context context;

src/tests/test.cpp

@@ -27,7 +27,7 @@
 #include <iostream>
 #include <iomanip>
 #include <string>
-#include <task.h>
+#include <main.h>
 #include <util.h>
 #include <text.h>
 #include "test.h"

src/tests/text.t.cpp

@@ -25,7 +25,7 @@
 //
 ////////////////////////////////////////////////////////////////////////////////
 #include <iostream>
-#include "task.h"
+#include "main.h"
 #include "text.h"
 #include "test.h"