qapi: use explicitly internal module names

QAPISchemaModularCVisitor._add_system_module() prefixes './' to its name
argument to make it a module name.  Pass the module name instead.  This
will allow us to coalesce the methods to add modules later on.

Signed-off-by: John Snow <jsnow@redhat.com>
Message-Id: <20210201193747.2169670-8-jsnow@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
[Commit message reworded]
Signed-off-by: Markus Armbruster <armbru@redhat.com>

scripts/qapi/commands.py

@@ -286,7 +286,7 @@ def _begin_user_module(self, name: str) -> None:
                              types=types))
 
     def visit_end(self) -> None:
-        self._add_system_module('init', ' * QAPI Commands initialization')
+        self._add_system_module('./init', ' * QAPI Commands initialization')
         self._genh.add(mcgen('''
 #include "qapi/qmp/dispatch.h"
 

scripts/qapi/events.py

@@ -191,7 +191,7 @@ def _begin_user_module(self, name: str) -> None:
                              types=types))
 
     def visit_end(self) -> None:
-        self._add_system_module('emit', ' * QAPI Events emission')
+        self._add_system_module('./emit', ' * QAPI Events emission')
         self._genc.preamble_add(mcgen('''
 #include "qemu/osdep.h"
 #include "%(prefix)sqapi-emit-events.h"

scripts/qapi/gen.py

@@ -285,7 +285,8 @@ def _add_user_module(self, name: str, blurb: str) -> None:
         self._add_module(name, blurb)
 
     def _add_system_module(self, name: Optional[str], blurb: str) -> None:
-        self._add_module(name and './' + name, blurb)
+        assert QAPISchemaModule.is_system_module(name)
+        self._add_module(name, blurb)
 
     def write(self, output_dir: str, opt_builtins: bool = False) -> None:
         for name in self._module: