[libc++] NFC: Move the status docs to their own subdirectory

This cleans up the libcxx/doc directory quite a bit and will avoid the
proliferation of status files in that directory as new standards are voted.

libcxx/docs/Status/Cxx14.rst

@@ -1,10 +1,10 @@
-.. _cxx1y-status:
+.. _cxx14-status:
 
 ================================
 libc++ C++14 Status
 ================================
 
-.. include:: Helpers/Styles.rst
+.. include:: ../Helpers/Styles.rst
 
 .. contents::
    :local:
@@ -28,24 +28,24 @@ The groups that have contributed papers:
 -  SG1 - Study group #1 (Concurrency working group)
 
 
-.. _paper-status-cxx1y:
+.. _paper-status-cxx14:
 
 Paper Status
 ====================================
 
 .. csv-table::
-   :file: Cxx1yStatusPaperStatus.csv
+   :file: Cxx14Papers.csv
    :header-rows: 1
    :widths: auto
 
 
-.. _issues-status-cxx1y:
+.. _issues-status-cxx14:
 
 Library Working Group Issues Status
 ====================================
 
 .. csv-table::
-   :file: Cxx1yStatusIssuesStatus.csv
+   :file: Cxx14Issues.csv
    :header-rows: 1
    :widths: auto
 

libcxx/docs/Status/Cxx17.rst

@@ -1,10 +1,10 @@
-.. _cxx1z-status:
+.. _cxx17-status:
 
 ================================
 libc++ C++17 Status
 ================================
 
-.. include:: Helpers/Styles.rst
+.. include:: ../Helpers/Styles.rst
 
 .. contents::
    :local:
@@ -28,13 +28,13 @@ The groups that have contributed papers:
 
 .. note:: "Nothing to do" means that no library changes were needed to implement this change.
 
-.. _paper-status-cxx1z:
+.. _paper-status-cxx17:
 
 Paper Status
 ====================================
 
 .. csv-table::
-   :file: Cxx1zStatusPaperStatus.csv
+   :file: Cxx17Papers.csv
    :header-rows: 1
    :widths: auto
 
@@ -44,13 +44,13 @@ Paper Status
    .. [#note-P0607] P0607: The parts of P0607 that are not done are the ``<regex>`` bits.
 
 
-.. _issues-status-cxx1z:
+.. _issues-status-cxx17:
 
 Library Working Group Issues Status
 ====================================
 
 .. csv-table::
-   :file: Cxx1zStatusIssuesStatus.csv
+   :file: Cxx17Issues.csv
    :header-rows: 1
    :widths: auto
 

libcxx/docs/Status/Cxx20.rst

@@ -1,10 +1,10 @@
-.. _cxx2a-status:
+.. _cxx20-status:
 
 ================================
 libc++ C++20 Status
 ================================
 
-.. include:: Helpers/Styles.rst
+.. include:: ../Helpers/Styles.rst
 
 .. contents::
    :local:
@@ -28,13 +28,13 @@ The groups that have contributed papers:
 
 .. note:: "Nothing to do" means that no library changes were needed to implement this change.
 
-.. _paper-status-cxx2a:
+.. _paper-status-cxx20:
 
 Paper Status
 ====================================
 
 .. csv-table::
-   :file: Cxx2aStatusPaperStatus.csv
+   :file: Cxx20Papers.csv
    :header-rows: 1
    :widths: auto
 
@@ -46,13 +46,13 @@ Paper Status
    .. [#note-P0883] P0883: shared_ptr and floating-point changes weren't applied as they themselves aren't implemented yet.
 
 
-.. _issues-status-cxx2a:
+.. _issues-status-cxx20:
 
 Library Working Group Issues Status
 ====================================
 
 .. csv-table::
-   :file: Cxx2aStatusIssuesStatus.csv
+   :file: Cxx20Issues.csv
    :header-rows: 1
    :widths: auto
 

libcxx/docs/Status/Cxx2b.rst

@@ -4,7 +4,7 @@
 libc++ C++2b Status
 ================================
 
-.. include:: Helpers/Styles.rst
+.. include:: ../Helpers/Styles.rst
 
 .. contents::
    :local:
@@ -33,7 +33,7 @@ Paper Status
 ====================================
 
 .. csv-table::
-   :file: Cxx2bStatusPaperStatus.csv
+   :file: Cxx2bPapers.csv
    :header-rows: 1
    :widths: auto
 
@@ -43,7 +43,7 @@ Library Working Group Issues Status
 ====================================
 
 .. csv-table::
-   :file: Cxx2bStatusIssuesStatus.csv
+   :file: Cxx2bIssues.csv
    :header-rows: 1
    :widths: auto
 

libcxx/docs/Status/Format.rst

@@ -1,10 +1,10 @@
-.. ranges-status:
+.. format-status:
 
 ================================
 libc++ Format Status
 ================================
 
-.. include:: Helpers/Styles.rst
+.. include:: ../Helpers/Styles.rst
 
 .. contents::
    :local:
@@ -28,7 +28,7 @@ Sub-Projects in the Format library
 ==================================
 
 .. csv-table::
-   :file: FormatProposalStatus.csv
+   :file: FormatPaper.csv
    :header-rows: 1
    :widths: auto
 
@@ -48,6 +48,6 @@ Paper and Issue Status
 ======================
 
 .. csv-table::
-   :file: FormatIssuePaperStatus.csv
+   :file: FormatIssues.csv
    :header-rows: 1
    :widths: auto

libcxx/docs/Status/Ranges.rst

@@ -4,7 +4,7 @@
 libc++ Ranges Status
 ================================
 
-.. include:: Helpers/Styles.rst
+.. include:: ../Helpers/Styles.rst
 
 .. contents::
    :local:
@@ -27,7 +27,7 @@ Sub-Projects in the One Ranges Proposal
 =======================================
 
 .. csv-table::
-   :file: OneRangesProposalStatus.csv
+   :file: RangesPaper.csv
    :header-rows: 1
    :widths: auto
 
@@ -46,6 +46,6 @@ Paper and Issue Status
 (Note: stolen from MSVC `here <https://github.com/microsoft/STL/issues/39>`_.)
 
 .. csv-table::
-   :file: RangesIssuePaperStatus.csv
+   :file: RangesIssues.csv
    :header-rows: 1
    :widths: auto

libcxx/docs/index.rst

@@ -39,12 +39,12 @@ Getting Started with libc++
    BuildingLibcxx
    TestingLibcxx
    Contributing
-   Cxx1yStatus
-   Cxx1zStatus
-   Cxx2aStatus
-   Cxx2bStatus
-   RangesStatus
-   FormatStatus
+   Status/Cxx14
+   Status/Cxx17
+   Status/Cxx20
+   Status/Cxx2b
+   Status/Ranges
+   Status/Format
 
 
 .. toctree::
@@ -139,9 +139,9 @@ C++ Dialect Support
 ---------------------
 
 * C++11 - Complete
-* :ref:`C++14 - Complete <cxx1y-status>`
-* :ref:`C++17 - In Progress <cxx1z-status>`
-* :ref:`C++20 - In Progress <cxx2a-status>`
+* :ref:`C++14 - Complete <cxx14-status>`
+* :ref:`C++17 - In Progress <cxx17-status>`
+* :ref:`C++20 - In Progress <cxx20-status>`
 * :ref:`C++2b - In Progress <cxx2b-status>`
 * `Post C++14 Technical Specifications - In Progress <http://libcxx.llvm.org/ts1z_status.html>`__
 * :ref:`C++ Feature Test Macro Status <feature-status>`