Remove duplicate or commented-out #includes

I wrote a little script to detect duplicate or commented-out #includes
and ran it on gdb.  This patch is the result.  Tested by rebuilding.

gdb/ChangeLog
2019-01-21  Tom Tromey  <tom@tromey.com>

	* ui-out.c: Fix includes.
	* tui/tui-source.c: Fix includes.
	* target.c: Fix includes.
	* remote.c: Fix includes.
	* regcache.c: Fix includes.
	* python/py-block.c: Fix includes.
	* printcmd.c: Fix includes.
	* or1k-tdep.c: Fix includes.
	* mi/mi-main.c: Fix includes.
	* m32r-tdep.c: Fix includes.
	* csky-tdep.c: Fix includes.
	* compile/compile-cplus-types.c: Fix includes.
	* cli/cli-interp.c: Fix includes.

gdb/gdbserver/ChangeLog
2019-01-21  Tom Tromey  <tom@tromey.com>

	* tracepoint.c: Fix includes.
	* remote-utils.c: Fix includes.
	* linux-x86-low.c: Fix includes.

gdb/stubs/ChangeLog
2019-01-21  Tom Tromey  <tom@tromey.com>

	* ia64vms-stub.c: Fix includes.

gdb/ChangeLog

@@ -1,3 +1,19 @@
+2019-01-21  Tom Tromey  <tom@tromey.com>
+
+	* ui-out.c: Fix includes.
+	* tui/tui-source.c: Fix includes.
+	* target.c: Fix includes.
+	* remote.c: Fix includes.
+	* regcache.c: Fix includes.
+	* python/py-block.c: Fix includes.
+	* printcmd.c: Fix includes.
+	* or1k-tdep.c: Fix includes.
+	* mi/mi-main.c: Fix includes.
+	* m32r-tdep.c: Fix includes.
+	* csky-tdep.c: Fix includes.
+	* compile/compile-cplus-types.c: Fix includes.
+	* cli/cli-interp.c: Fix includes.
+
 2019-01-21  Alan Hayward  <alan.hayward@arm.com>
 
 	* aarch64-tdep.c (aapcs_is_vfp_call_or_return_candidate_1): Check

gdb/cli/cli-interp.c

@@ -24,7 +24,6 @@
 #include "ui-out.h"
 #include "cli-out.h"
 #include "top.h"		/* for "execute_command" */
-#include "event-top.h"
 #include "infrun.h"
 #include "observable.h"
 #include "gdbthread.h"

gdb/compile/compile-cplus-types.c

@@ -28,7 +28,6 @@
 #include "source.h"
 #include "cp-support.h"
 #include "cp-abi.h"
-#include "symtab.h"
 #include "objfiles.h"
 #include "block.h"
 #include "gdbcmd.h"

gdb/csky-tdep.c

@@ -52,10 +52,8 @@
 #include "dwarf2-frame.h"
 #include "user-regs.h"
 #include "valprint.h"
-#include "reggroups.h"
 #include "csky-tdep.h"
 #include "regset.h"
-#include "block.h"
 #include "opcode/csky.h"
 #include <algorithm>
 #include <vector>

gdb/gdbserver/ChangeLog

@@ -1,3 +1,9 @@
+2019-01-21  Tom Tromey  <tom@tromey.com>
+
+	* tracepoint.c: Fix includes.
+	* remote-utils.c: Fix includes.
+	* linux-x86-low.c: Fix includes.
+
 2019-01-01  Joel Brobecker  <brobecker@adacore.com>
 
 	* gdbreplay.c (gdbreplay_version): Update copyright year in

gdb/gdbserver/linux-x86-low.c

@@ -72,7 +72,6 @@ static const char *xmltarget_amd64_linux_no_xml = "@<target>\
 
 #include <sys/reg.h>
 #include <sys/procfs.h>
-#include "nat/gdb_ptrace.h"
 #include <sys/uio.h>
 
 #ifndef PTRACE_GET_THREAD_AREA

gdb/gdbserver/remote-utils.c

@@ -25,7 +25,6 @@
 #include "tdesc.h"
 #include "dll.h"
 #include "rsp-low.h"
-#include "gdbthread.h"
 #include "netstuff.h"
 #include "filestuff.h"
 #include <ctype.h>

gdb/gdbserver/tracepoint.c

@@ -7330,7 +7330,6 @@ gdb_agent_init (void)
 }
 
 #include <sys/mman.h>
-#include <fcntl.h>
 
 IP_AGENT_EXPORT_VAR char *gdb_tp_heap_buffer;
 IP_AGENT_EXPORT_VAR char *gdb_jump_pad_buffer;

gdb/m32r-tdep.c

@@ -35,7 +35,6 @@
 #include "regcache.h"
 #include "trad-frame.h"
 #include "dis-asm.h"
-#include "objfiles.h"
 #include "m32r-tdep.h"
 #include <algorithm>
 

gdb/mi/mi-main.c

@@ -43,7 +43,6 @@
 #include "mi-common.h"
 #include "language.h"
 #include "valprint.h"
-#include "inferior.h"
 #include "osdata.h"
 #include "common/gdb_splay_tree.h"
 #include "tracepoint.h"

gdb/or1k-tdep.c

@@ -33,7 +33,6 @@
 #include "block.h"
 #include "reggroups.h"
 #include "arch-utils.h"
-#include "frame.h"
 #include "frame-unwind.h"
 #include "frame-base.h"
 #include "dwarf2-frame.h"

gdb/printcmd.c

@@ -50,7 +50,6 @@
 #include "format.h"
 #include "source.h"
 #include "common/byte-vector.h"
-#include "cli/cli-style.h"
 
 /* Last specified output format.  */
 

gdb/python/py-block.c

@@ -23,7 +23,6 @@
 #include "symtab.h"
 #include "python-internal.h"
 #include "objfiles.h"
-#include "symtab.h"
 
 typedef struct blpy_block_object {
   PyObject_HEAD

gdb/regcache.c

@@ -1419,7 +1419,6 @@ register_dump::dump (ui_file *file)
 #if GDB_SELF_TEST
 #include "selftest.h"
 #include "selftest-arch.h"
-#include "gdbthread.h"
 #include "target-float.h"
 
 namespace selftests {

gdb/remote.c

@@ -28,7 +28,6 @@
 #include "symfile.h"
 #include "target.h"
 #include "process-stratum-target.h"
-/*#include "terminal.h" */
 #include "gdbcmd.h"
 #include "objfiles.h"
 #include "gdb-stabs.h"

gdb/stubs/ChangeLog

@@ -1,3 +1,7 @@
+2019-01-21  Tom Tromey  <tom@tromey.com>
+
+	* ia64vms-stub.c: Fix includes.
+
 2012-12-19  Joel Brobecker  <brobecker@adacore.com>
 
 	* buildvms.com: Add copyright header.

gdb/stubs/ia64vms-stub.c

@@ -56,7 +56,6 @@
 #include <builtins.h>
 #include <prtdef.h>
 #include <psldef.h>
-#include <ssdef.h>
 #include <chfdef.h>
 
 #include <lib_c/imcbdef.h>

gdb/target.c

@@ -48,7 +48,6 @@
 #include <algorithm>
 #include "byte-vector.h"
 #include "terminal.h"
-#include <algorithm>
 #include <unordered_map>
 
 static void generic_tls_error (void) ATTRIBUTE_NORETURN;

gdb/tui/tui-source.c

@@ -25,7 +25,6 @@
 #include "frame.h"
 #include "breakpoint.h"
 #include "source.h"
-#include "symtab.h"
 #include "objfiles.h"
 #include "filenames.h"
 #include "source-cache.h"

gdb/ui-out.c

@@ -28,7 +28,6 @@
 #include <vector>
 #include <memory>
 #include <string>
-#include <memory>
 
 namespace {