[lldb] Call __lldb_init_module from __init__

[kastiglione]

Summary

Update __init__.py generation to implement __lldb_init_module, which calls
__lldb_init_module on submodules that define it.

This allows the use case where a user runs command script import lldb.macosx.
With this change, the __lldb_init_module function in crashlog.py and
heap.py will be run, which is where command registration is occurring.

[JDevlieghere]

Ship it

lldb/bindings/python/createPythonInit.py

 import os
 import sys
 
 pkgRelDir = sys.argv[1]
 pkgFiles = sys.argv[2:]
 
 getFileName = lambda f: os.path.splitext(os.path.basename(f))[0]
 importNames = ', '.join('"{}"'.format(getFileName(f)) for f in pkgFiles)
 
 script = """__all__ = [{import_names}]
 for x in __all__:
   __import__('lldb.{pkg_name}.' + x)
+
+def __lldb_init_module(debugger, internal_dict):
+  import lldb
+  for x in __all__:
+    submodule = getattr(lldb.{pkg_name}, x)
+    lldb_init = getattr(submodule, '__lldb_init_module', None)
+    if lldb_init:
+      lldb_init(debugger, internal_dict)
 """.format(import_names=importNames, pkg_name=pkgRelDir.replace("/", "."))
 
 pkgIniFile = os.path.normpath(os.path.join(pkgRelDir, "__init__.py"))
 with open(pkgIniFile, "w") as f:
     f.write(script)