Move gdb_select.h to gdbsupport/

This moves gdb_select.h to gdbsupport/, so it can be used by other
code there.

gdb/ChangeLog
2020-04-13  Tom Tromey  <tom@tromey.com>

	* gdb_select.h: Move to ../gdbsupport/.
	* event-loop.c: Update include path.
	* top.c: Update include path.
	* ser-base.c: Update include path.
	* ui-file.c: Update include path.
	* ser-tcp.c: Update include path.
	* guile/scm-ports.c: Update include path.
	* posix-hdep.c: Update include path.
	* ser-unix.c: Update include path.
	* gdb_usleep.c: Update include path.
	* mingw-hdep.c: Update include path.
	* inflow.c: Update include path.
	* infrun.c: Update include path.
	* event-top.c: Update include path.

gdbsupport/ChangeLog
2020-04-13  Tom Tromey  <tom@tromey.com>

	* gdb_select.h: Move from ../gdb/.

gdb/ChangeLog

@@ -1,3 +1,20 @@
+2020-04-13  Tom Tromey  <tom@tromey.com>
+
+	* gdb_select.h: Move to ../gdbsupport/.
+	* event-loop.c: Update include path.
+	* top.c: Update include path.
+	* ser-base.c: Update include path.
+	* ui-file.c: Update include path.
+	* ser-tcp.c: Update include path.
+	* guile/scm-ports.c: Update include path.
+	* posix-hdep.c: Update include path.
+	* ser-unix.c: Update include path.
+	* gdb_usleep.c: Update include path.
+	* mingw-hdep.c: Update include path.
+	* inflow.c: Update include path.
+	* infrun.c: Update include path.
+	* event-top.c: Update include path.
+
 2020-04-13  Tom Tromey  <tom@tromey.com>
 
 	* configure: Rebuild.

gdb/event-loop.c

@@ -32,8 +32,7 @@
 
 #include <sys/types.h>
 #include "gdbsupport/gdb_sys_time.h"
-#include "gdb_select.h"
-#include "observable.h"
+#include "gdbsupport/gdb_select.h"
 #include "top.h"
 
 /* Tell create_file_handler what events we are interested in.

gdb/event-top.c

@@ -39,7 +39,7 @@
 #include "maint.h"
 #include "gdbsupport/buffer.h"
 #include "ser-event.h"
-#include "gdb_select.h"
+#include "gdbsupport/gdb_select.h"
 #include "gdbsupport/gdb-sigmask.h"
 
 /* readline include files.  */

gdb/guile/scm-ports.c

@@ -22,7 +22,7 @@
    conventions, et.al.  */
 
 #include "defs.h"
-#include "gdb_select.h"
+#include "gdbsupport/gdb_select.h"
 #include "top.h"
 #include "target.h"
 #include "guile-internal.h"

gdb/inflow.c

@@ -27,7 +27,7 @@
 #include "observable.h"
 #include <signal.h>
 #include <fcntl.h>
-#include "gdb_select.h"
+#include "gdbsupport/gdb_select.h"
 
 #include "inflow.h"
 #include "gdbcmd.h"

gdb/infrun.c

@@ -64,7 +64,7 @@
 #include "arch-utils.h"
 #include "gdbsupport/scope-exit.h"
 #include "gdbsupport/forward-scope-exit.h"
-#include "gdb_select.h"
+#include "gdbsupport/gdb_select.h"
 #include <unordered_map>
 
 /* Prototypes for local functions */

gdb/mingw-hdep.c

@@ -22,7 +22,7 @@
 #include "serial.h"
 #include "event-loop.h"
 
-#include "gdb_select.h"
+#include "gdbsupport/gdb_select.h"
 
 #include <windows.h>
 

gdb/posix-hdep.c

@@ -20,7 +20,7 @@
 #include "defs.h"
 #include "event-loop.h"
 
-#include "gdb_select.h"
+#include "gdbsupport/gdb_select.h"
 
 /* Wrapper for select.  Nothing special needed on POSIX platforms.  */
 

gdb/ser-base.c

@@ -22,7 +22,7 @@
 #include "ser-base.h"
 #include "event-loop.h"
 
-#include "gdb_select.h"
+#include "gdbsupport/gdb_select.h"
 #include "gdbsupport/gdb_sys_time.h"
 #ifdef USE_WIN32API
 #include <winsock2.h>

gdb/ser-tcp.c

@@ -58,7 +58,7 @@
 #endif
 
 #include <signal.h>
-#include "gdb_select.h"
+#include "gdbsupport/gdb_select.h"
 #include <algorithm>
 
 #ifndef HAVE_SOCKLEN_T

gdb/ser-unix.c

@@ -28,7 +28,7 @@
 #include <sys/socket.h>
 #include "gdbsupport/gdb_sys_time.h"
 
-#include "gdb_select.h"
+#include "gdbsupport/gdb_select.h"
 #include "gdbcmd.h"
 #include "gdbsupport/filestuff.h"
 #include <termios.h>

gdb/top.c

@@ -51,7 +51,7 @@
 #include "filenames.h"
 #include "frame.h"
 #include "gdbsupport/buffer.h"
-#include "gdb_select.h"
+#include "gdbsupport/gdb_select.h"
 #include "gdbsupport/scope-exit.h"
 #include "gdbarch.h"
 #include "gdbsupport/pathstuff.h"

gdb/ui-file.c

@@ -22,7 +22,7 @@
 #include "defs.h"
 #include "ui-file.h"
 #include "gdb_obstack.h"
-#include "gdb_select.h"
+#include "gdbsupport/gdb_select.h"
 #include "gdbsupport/filestuff.h"
 #include "cli/cli-style.h"
 

gdbsupport/ChangeLog

@@ -1,3 +1,7 @@
+2020-04-13  Tom Tromey  <tom@tromey.com>
+
+	* gdb_select.h: Move from ../gdb/.
+
 2020-04-13  Tom Tromey  <tom@tromey.com>
 
 	* config.in, configure: Rebuild.