gdb: Convert TUI windows names to lower case.

This commit converts the window names for the TUI windows to lower case.
The windows names are already lower case in the documentation, and are
shown as lower case in some of the command completion results.

Given that all the commands that take a window name currently accept
upper or lower case, this commit just changes the window names to lower
case in the remaining places they are displayed by gdb.

gdb/ChangeLog:

	* tui/tui-data.h (SRC_NAME): Convert to lower case.
	(CMD_NAME): Likewise.
	(DATA_NAME): Likewise.
	(DISASSEM_NAME): Likewise.
	* tui/tui-win.c (tui_set_focus): Window names are now lower case.
	(tui_set_win_height): Likewise.
	(parse_scrolling_args): Likewise.

gdb/ChangeLog

@@ -1,3 +1,13 @@
+2015-07-10  Andrew Burgess  <andrew.burgess@embecosm.com>
+
+	* tui/tui-data.h (SRC_NAME): Convert to lower case.
+	(CMD_NAME): Likewise.
+	(DATA_NAME): Likewise.
+	(DISASSEM_NAME): Likewise.
+	* tui/tui-win.c (tui_set_focus): Window names are now lower case.
+	(tui_set_win_height): Likewise.
+	(parse_scrolling_args): Likewise.
+
 2015-07-10  Markus Metzger  <markus.t.metzger@intel.com>
 
 	* record-btrace.c (record_btrace_goto_begin)

gdb/tui/tui-data.h

@@ -60,10 +60,10 @@ struct tui_gen_win_info
 #define NO_REGS_STRING          "[ Register Values Unavailable ]"
 #define NO_DATA_STRING          "[ No Data Values Displayed ]"
 #define MAX_CONTENT_COUNT       100
-#define SRC_NAME                "SRC"
-#define CMD_NAME                "CMD"
-#define DATA_NAME               "REGS"
-#define DISASSEM_NAME           "ASM"
+#define SRC_NAME                "src"
+#define CMD_NAME                "cmd"
+#define DATA_NAME               "regs"
+#define DISASSEM_NAME           "asm"
 #define TUI_NULL_STR            ""
 #define DEFAULT_HISTORY_COUNT	25
 #define BOX_WINDOW              TRUE

gdb/tui/tui-win.c

@@ -1036,11 +1036,11 @@ tui_set_focus (char *arg, int from_tty)
       struct tui_win_info *win_info = (struct tui_win_info *) NULL;
 
       for (i = 0; (i < strlen (buf_ptr)); i++)
-	buf_ptr[i] = toupper (arg[i]);
+	buf_ptr[i] = tolower (arg[i]);
 
-      if (subset_compare (buf_ptr, "NEXT"))
+      if (subset_compare (buf_ptr, "next"))
 	win_info = tui_next_win (tui_win_with_focus ());
-      else if (subset_compare (buf_ptr, "PREV"))
+      else if (subset_compare (buf_ptr, "prev"))
 	win_info = tui_prev_win (tui_win_with_focus ());
       else
 	win_info = tui_partial_win_by_name (buf_ptr);
@@ -1167,7 +1167,7 @@ tui_set_win_height (char *arg, int from_tty)
 
 	  /* Validate the window name.  */
 	  for (i = 0; i < strlen (wname); i++)
-	    wname[i] = toupper (wname[i]);
+	    wname[i] = tolower (wname[i]);
 	  win_info = tui_partial_win_by_name (wname);
 
 	  if (win_info == (struct tui_win_info *) NULL
@@ -1689,7 +1689,7 @@ parse_scrolling_args (char *arg,
 
 	      /* Validate the window name.  */
 	      for (i = 0; i < strlen (wname); i++)
-		wname[i] = toupper (wname[i]);
+		wname[i] = tolower (wname[i]);
 	    }
 	  else
 	    wname = "?";