docs/system: convert Texinfo documentation to rST

Apart from targets.rst, which was written by hand, this is an automated
conversion obtained with the following command:

  makeinfo --force -o - --docbook \
    -D 'qemu_system_x86 QEMU_SYSTEM_X86_MACRO' \
    -D 'qemu_system     QEMU_SYSTEM_MACRO' \
    $texi | pandoc -f docbook -t rst+smart | perl -e '
      $/=undef;
      $_ = <>;
      s/^-  − /-  /gm;
      s/QEMU_SYSTEM_MACRO/|qemu_system|/g;
      s/QEMU_SYSTEM_X86_MACRO/|qemu_system_x86|/g;
      s/(?=::\n\n +\|qemu)/.. parsed-literal/g;
      s/:\n\n::$/::/gm;
      print' > $rst

In addition, the following changes were made manually:

- target-i386.rst and target-mips.rst: replace CPU model documentation with
  an include directive

- monitor.rst: replace the command section with a comment

- images.rst: add toctree

- target-arm.rst: Replace use of :math: (which Sphinx complains
  about) with :sup:, and hide it behind |I2C| and |I2C| substitutions.

Content that is not @included remains exclusive to qemu-doc.texi.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20200228153619.9906-20-peter.maydell@linaro.org
Message-id: 20200226113034.6741-19-pbonzini@redhat.com
[PMM: Fixed target-arm.rst use of :math:; remove out of date
 note about images.rst from commit message; fixed expansion
 of |qemu_system_x86|; use parsed-literal in invocation.rst
 when we want to use |qemu_system_x86|; fix incorrect subsection
 level for "OS requirements" in target-i386.rst; fix incorrect
 syntax for making links to other sections of the manual]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 8 insertions, 4 deletions

diff --git a/docs/defs.rst.inc b/docs/defs.rst.inc
index ae80d2f..48d05aa 100644
--- a/docs/defs.rst.inc
+++ b/docs/defs.rst.inc
@@ -3,9 +3,13 @@
    all rST files as part of the epilogue by docs/conf.py.  conf.py
    also defines some dynamically generated substitutions like CONFDIR.
 
-   Note that |qemu_system| is intended to be used inside a parsed-literal
-   block: the definition must not include extra literal formatting with
-   ``..``: this works in the HTML output but the manpages will end up
-   misrendered with following normal text incorrectly in boldface.
+   Note that |qemu_system| and |qemu_system_x86| are intended to be
+   used inside a parsed-literal block: the definition must not include
+   extra literal formatting with ``..``: this works in the HTML output
+   but the manpages will end up misrendered with following normal text
+   incorrectly in boldface.
 
 .. |qemu_system| replace:: qemu-system-x86_64
+.. |qemu_system_x86| replace:: qemu_system-x86_64
+.. |I2C| replace:: I\ :sup:`2`\ C
+.. |I2S| replace:: I\ :sup:`2`\ S