Fix doc index name on Windows

[Jonathan Larmour <jifl@eCosCentric.com>]

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When cross building GDB 7.2 to Windows I have found that the GDB
documentation set generates HTML files named index.html and Index.html. On
Windows this unfortunately doesn't work as those names match each other.
The former is the front page and ToC, the latter is the genuine Index at
the end of the documentation.

The simplest solution is just to rename the Index at the end to have a
different node name. This is what other GNU documentation sets (GAS, BFD,
CPP, etc.) do. So that's what the attached patch (against current CVS) does.

I have a copyright assignment and check-in permissions. Okay to commit?

2010-11-25  Jonathan Larmour  <jifl@eCosCentric.com>

	* gdb.texinfo (Top): Rename Index to GDB Index to prevent clashes
	on Windows systems.
	(Help): Likewise.
	(Index): Likewise.
	* gdbint.texinfo (Top): Similar but with Index to GDB Internals Index.
	(GDB Internals Index): Likewise.

Jifl
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Index: gdb.texinfo
===================================================================
RCS file: /cvs/src/src/gdb/doc/gdb.texinfo,v
retrieving revision 1.776
diff -u -5 -p -r1.776 gdb.texinfo
--- gdb.texinfo	23 Nov 2010 14:39:16 -0000	1.776
+++ gdb.texinfo	25 Nov 2010 17:33:49 -0000
@@ -182,11 +182,11 @@ software in general.  We will miss him.
                                  the operating system
 * Trace File Format::		GDB trace file format
 * Copying::			GNU General Public License says
                                 how you can copy and share GDB
 * GNU Free Documentation License::  The license for this documentation
-* Index::                       Index
+* GDB Index::                   Index
 @end menu
 
 @end ifnottex
 
 @contents
@@ -1714,11 +1714,11 @@ inspect
 In addition to @code{help}, you can use the @value{GDBN} commands @code{info}
 and @code{show} to inquire about the state of your program, or the state
 of @value{GDBN} itself.  Each command supports many topics of inquiry; this
 manual introduces each of them in the appropriate context.  The listings
 under @code{info} and under @code{show} in the Index point to
-all the sub-commands.  @xref{Index}.
+all the sub-commands.  @xref{GDB Index}.
 
 @c @group
 @table @code
 @kindex info
 @kindex i @r{(@code{info})}
@@ -36355,12 +36355,12 @@ which @value{GDBN} currently ignores.
 
 @node GNU Free Documentation License
 @appendix GNU Free Documentation License
 @include fdl.texi
 
-@node Index
-@unnumbered Index
+@node GDB Index
+@unnumbered GDB Index
 
 @printindex cp
 
 @tex
 % I think something like @colophon should be in texinfo.  In the
Index: gdbint.texinfo
===================================================================
RCS file: /cvs/src/src/gdb/doc/gdbint.texinfo,v
retrieving revision 1.327
diff -u -5 -p -r1.327 gdbint.texinfo
--- gdbint.texinfo	20 Oct 2010 22:53:36 -0000	1.327
+++ gdbint.texinfo	25 Nov 2010 17:33:50 -0000
@@ -92,11 +92,11 @@ as the mechanisms that adapt @value{GDBN
 * Testsuite::
 * Hints::
 
 * GDB Observers::  @value{GDBN} Currently available observers
 * GNU Free Documentation License::  The license for this documentation
-* Index::
+* GDB Internals Index::
 @end menu
 
 @node Summary
 @chapter Summary
 
@@ -8030,11 +8030,11 @@ in the directory the script was called f
 
 @node GNU Free Documentation License
 @appendix GNU Free Documentation License
 @include fdl.texi
 
-@node Index
-@unnumbered Index
+@node GDB Internals Index
+@unnumbered GDB Internals Index
 
 @printindex cp
 
 @bye