Replace qmp-commands.hx by docs/qmp-commands.txt

The only remaining function of qmp-commands.hx is to let us generate
qmp-commands.txt from it.  Replace qmp-commands.hx by qmp-commands.txt.

We intend to move the documentation into the QAPI schema and generate
qapi-commands.txt from it, but not right now.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20160912091913.15831-19-marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>

docs/qapi-code-gen.txt

@@ -964,9 +964,9 @@ Example:
 
 Used to generate the marshaling/dispatch functions for the commands
 defined in the schema. The generated code implements
-qmp_marshal_COMMAND() (mentioned in qmp-commands.hx, and registered
-automatically), and declares qmp_COMMAND() that the user must
-implement.  The following files are generated:
+qmp_marshal_COMMAND() (registered automatically), and declares
+qmp_COMMAND() that the user must implement.  The following files are
+generated:
 
 $(prefix)qmp-marshal.c: command marshal/dispatch functions for each
                         QMP command defined in the schema. Functions

docs/writing-qmp-commands.txt

@@ -119,16 +119,6 @@ There are a few things to be noticed:
 5. Printing to the terminal is discouraged for QMP commands, we do it here
    because it's the easiest way to demonstrate a QMP command
 
-Now a little hack is needed. As we're still using the old QMP server we need
-to add the new command to its internal dispatch table. This step won't be
-required in the near future. Open the qmp-commands.hx file and add the
-following at the bottom:
-
-    {
-        .name       = "hello-world",
-        .args_type  = "",
-    },
-
 You're done. Now build qemu, run it as suggested in the "Testing" section,
 and then type the following QMP command:
 
@@ -173,20 +163,6 @@ There are two important details to be noticed:
 2. The C implementation signature must follow the schema's argument ordering,
    which is defined by the "data" member
 
-The last step is to update the qmp-commands.hx file:
-
-    {
-        .name       = "hello-world",
-        .args_type  = "message:s?",
-    },
-
-Notice that the "args_type" member got our "message" argument. The character
-"s" stands for "string" and "?" means it's optional. This too must be ordered
-according to the C implementation and schema file. You can look for more
-examples in the qmp-commands.hx file if you need to define more arguments.
-
-Again, this step won't be required in the future.
-
 Time to test our new version of the "hello-world" command. Build qemu, run it as
 described in the "Testing" section and then send two commands:
 
@@ -452,13 +428,6 @@ There are a number of things to be noticed:
 6. You have to include the "qmp-commands.h" header file in qemu-timer.c,
    otherwise qemu won't build
 
-The last step is to add the corresponding entry in the qmp-commands.hx file:
-
-    {
-        .name       = "query-alarm-clock",
-        .args_type  = "",
-    },
-
 Time to test the new command. Build qemu, run it as described in the "Testing"
 section and try this:
 
@@ -597,13 +566,6 @@ iteration of the loop. That's because the alarm timer method in use is the
 first element of the alarm_timers array. Also notice that QAPI lists are handled
 by hand and we return the head of the list.
 
-To test this you have to add the corresponding qmp-commands.hx entry:
-
-    {
-        .name       = "query-alarm-methods",
-        .args_type  = "",
-    },
-
 Now Build qemu, run it as explained in the "Testing" section and try our new
 command: