sphinx: rename top level document in each manual

It is more common to call the top level document index.rst. This is
what this patch is doing, along with all required references fixup.

(From yocto-docs rev: 2cea7fbba9210479fc0387d7e1b80da9885558f0)

Signed-off-by: Nicolas Dechesne <nicolas.dechesne@linaro.org>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

documentation/overview-manual/overview-manual-concepts.rst

@@ -481,7 +481,7 @@ The BSP Layer provides machine configurations that target specific
 hardware. Everything in this layer is specific to the machine for which
 you are building the image or the SDK. A common structure or form is
 defined for BSP layers. You can learn more about this structure in the
-:doc:`../bsp-guide/bsp-guide`.
+:doc:`../bsp-guide/index`.
 
 .. note::
 
@@ -1366,7 +1366,7 @@ can initialize the environment before using the tools.
       section.
 
    -  For information on setting up a cross-development environment, see
-      the :doc:`../sdk-manual/sdk-manual` manual.
+      the :doc:`../sdk-manual/index` manual.
 
 All the output files for an SDK are written to the ``deploy/sdk`` folder
 inside the :term:`Build Directory` as
@@ -1446,7 +1446,7 @@ The Yocto Project does most of the work for you when it comes to
 creating :ref:`sdk-manual/sdk-intro:the cross-development toolchain`. This
 section provides some technical background on how cross-development
 toolchains are created and used. For more information on toolchains, you
-can also see the :doc:`../sdk-manual/sdk-manual` manual.
+can also see the :doc:`../sdk-manual/index` manual.
 
 In the Yocto Project development environment, cross-development
 toolchains are used to build images and applications that run on the

documentation/overview-manual/overview-manual-development-environment.rst

@@ -103,7 +103,7 @@ methods exist for you to do work in the Yocto Project environment:
    hardware. To development BSPs, you need to take some additional steps
    beyond what was described in setting up a development host.
 
-   The :doc:`../bsp-guide/bsp-guide` provides BSP-related development
+   The :doc:`../bsp-guide/index` provides BSP-related development
    information. For specifics on development host preparation, see the
    ":ref:`bsp-guide/bsp:preparing your build host to work with bsp layers`"
    section in the Yocto Project Board Support Package (BSP) Developer's
@@ -114,7 +114,7 @@ methods exist for you to do work in the Yocto Project environment:
    using ``devtool`` makes kernel development quicker by reducing
    iteration cycle times.
 
-   The :doc:`../kernel-dev/kernel-dev` provides kernel-related
+   The :doc:`../kernel-dev/index` provides kernel-related
    development information. For specifics on development host
    preparation, see the
    ":ref:`kernel-dev/kernel-dev-common:preparing the build host to work on the kernel`"
@@ -130,7 +130,7 @@ methods exist for you to do work in the Yocto Project environment:
 
    For steps that show you how to set up your development host to use
    Toaster and on how to use Toaster in general, see the
-   :doc:`../toaster-manual/toaster-manual`.
+   :doc:`../toaster-manual/index`.
 
 Yocto Project Source Repositories
 =================================

documentation/overview-manual/overview-manual-intro.rst

@@ -37,17 +37,17 @@ This manual does not give you the following:
 
 -  *Step-by-step Instructions for Development Tasks:* Instructional
    procedures reside in other manuals within the Yocto Project
-   documentation set. For example, the :doc:`../dev-manual/dev-manual`
+   documentation set. For example, the :doc:`../dev-manual/index`
    provides examples on how to perform
    various development tasks. As another example, the 
-   :doc:`../sdk-manual/sdk-manual` manual contains detailed
+   :doc:`../sdk-manual/index` manual contains detailed
    instructions on how to install an SDK, which is used to develop
    applications for target hardware.
 
 -  *Reference Material:* This type of material resides in an appropriate
    reference manual. For example, system variables are documented in the
-   :doc:`../ref-manual/ref-manual`. As another
-   example, the :doc:`../bsp-guide/bsp-guide` contains reference information on
+   :doc:`../ref-manual/index`. As another
+   example, the :doc:`../bsp-guide/index` contains reference information on
    BSPs.
 
 -  *Detailed Public Information Not Specific to the Yocto Project:* For
@@ -63,7 +63,7 @@ supplemental information is recommended for full comprehension. For
 additional introductory information on the Yocto Project, see the
 :yocto_home:`Yocto Project Website <>`. If you want to build an image
 with no knowledge of Yocto Project as a way of quickly testing it out,
-see the :doc:`../brief-yoctoprojectqs/brief-yoctoprojectqs` document.
+see the :doc:`../brief-yoctoprojectqs/index` document.
 For a comprehensive list of links and other documentation, see the
 ":ref:`Links and Related
 Documentation <resources-links-and-related-documentation>`"

documentation/overview-manual/overview-manual-yp-intro.rst

@@ -251,7 +251,7 @@ accomplish this through a recipe that is a BitBake append
 .. note::
 
    For general information on BSP layer structure, see the
-   :doc:`../bsp-guide/bsp-guide`
+   :doc:`../bsp-guide/index`
    .
 
 The :term:`Source Directory`
@@ -339,12 +339,12 @@ applications using the Yocto Project:
    experience supplemented with the powerful set of ``devtool`` commands
    tailored for the Yocto Project environment.
 
-   For information on the eSDK, see the :doc:`../sdk-manual/sdk-manual` Manual.
+   For information on the eSDK, see the :doc:`../sdk-manual/index` Manual.
 
 -  *Toaster:* Toaster is a web interface to the Yocto Project
    OpenEmbedded build system. Toaster allows you to configure, run, and
    view information about builds. For information on Toaster, see the
-   :doc:`../toaster-manual/toaster-manual`.
+   :doc:`../toaster-manual/index`.
 
 Production Tools
 ----------------
@@ -650,7 +650,7 @@ Project.
    configure and start builds on multiple remote build servers.
 
    For information about and how to use Toaster, see the 
-   :doc:`../toaster-manual/toaster-manual`.
+   :doc:`../toaster-manual/index`.
 
 Reference Embedded Distribution (Poky)
 ======================================
@@ -812,7 +812,7 @@ helpful for getting started:
    application developers. This eSDK allows developers to incorporate
    their library and programming changes back into the image to make
    their code available to other application developers. For information
-   on the eSDK, see the :doc:`../sdk-manual/sdk-manual` manual.
+   on the eSDK, see the :doc:`../sdk-manual/index` manual.
 
 -  *Layer:* A collection of related recipes. Layers allow you to
    consolidate related metadata to customize your build. Layers also