doc: convert sphinx based docs

This is the output from sphinx-quickstart, massaged a bit, along with
our existing man pages converted to rst.

A skeleton notmuch-emacs manual is also included. It is not suitable
for end user use yet.

1 files changed, 107 insertions, 0 deletions

diff --git a/doc/man1/notmuch-tag.rst b/doc/man1/notmuch-tag.rst
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+===========
+notmuch-tag
+===========
+
+SYNOPSIS
+========
+
+**notmuch** **tag** [options ...] +<*tag*>|-<*tag*> [--] <*search-term*> ...
+
+**notmuch** **tag** **--batch** [--input=<*filename*>]
+
+DESCRIPTION
+===========
+
+Add/remove tags for all messages matching the search terms.
+
+See **notmuch-search-terms(7)** for details of the supported syntax for
+<*search-term*\ >.
+
+Tags prefixed by '+' are added while those prefixed by '-' are removed.
+For each message, tag changes are applied in the order they appear on
+the command line.
+
+The beginning of the search terms is recognized by the first argument
+that begins with neither '+' nor '-'. Support for an initial search term
+beginning with '+' or '-' is provided by allowing the user to specify a
+"--" argument to separate the tags from the search terms.
+
+**notmuch tag** updates the maildir flags according to tag changes if
+the **maildir.synchronize\_flags** configuration option is enabled. See
+**notmuch-config(1)** for details.
+
+Supported options for **tag** include
+
+    ``--remove-all``
+        Remove all tags from each message matching the search terms
+        before applying the tag changes appearing on the command line.
+        This means setting the tags of each message to the tags to be
+        added. If there are no tags to be added, the messages will have
+        no tags.
+
+    ``--batch``
+        Read batch tagging operations from a file (stdin by default).
+        This is more efficient than repeated **notmuch tag**
+        invocations. See `TAG FILE FORMAT <#tag_file_format>`__ below
+        for the input format. This option is not compatible with
+        specifying tagging on the command line.
+
+    ``--input=``\ <filename>
+        Read input from given file, instead of from stdin. Implies
+        ``--batch``.
+
+TAG FILE FORMAT
+===============
+
+The input must consist of lines of the format:
+
++<*tag*\ >\|-<*tag*\ > [...] [--] <*query*\ >
+
+Each line is interpreted similarly to **notmuch tag** command line
+arguments. The delimiter is one or more spaces ' '. Any characters in
+<*tag*\ > **may** be hex-encoded with %NN where NN is the hexadecimal
+value of the character. To hex-encode a character with a multi-byte
+UTF-8 encoding, hex-encode each byte. Any spaces in <tag> **must** be
+hex-encoded as %20. Any characters that are not part of <*tag*\ > **must
+not** be hex-encoded.
+
+In the future tag:"tag with spaces" style quoting may be supported for
+<*tag*\ > as well; for this reason all double quote characters in
+<*tag*\ > **should** be hex-encoded.
+
+The <*query*\ > should be quoted using Xapian boolean term quoting
+rules: if a term contains whitespace or a close paren or starts with a
+double quote, it must be enclosed in double quotes (not including any
+prefix) and double quotes inside the term must be doubled (see below for
+examples).
+
+Leading and trailing space ' ' is ignored. Empty lines and lines
+beginning with '#' are ignored.
+
+EXAMPLE
+-------
+
+The following shows a valid input to batch tagging. Note that only the
+isolated '\*' acts as a wildcard. Also note the two different quotings
+of the tag **space in tags**
+
+::
+
+    +winner *
+    +foo::bar%25 -- (One and Two) or (One and tag:winner)
+    +found::it -- tag:foo::bar%
+    # ignore this line and the next
+
+    +space%20in%20tags -- Two
+    # add tag '(tags)', among other stunts.
+    +crazy{ +(tags) +&are +#possible\ -- tag:"space in tags"
+    +match*crazy -- tag:crazy{
+    +some_tag -- id:"this is ""nauty)"""
+
+SEE ALSO
+========
+
+**notmuch(1)**, **notmuch-config(1)**, **notmuch-count(1)**,
+**notmuch-dump(1)**, **notmuch-hooks(5)**, **notmuch-insert(1)**,
+**notmuch-new(1)**, **notmuch-reply(1)**, **notmuch-restore(1)**,
+**notmuch-search(1)**, **notmuch-search-terms(7)**, **notmuch-show(1)**,