wafsamba: don't add -DSTATIC_%s_MODULES* arguments for SAMBA_LIBRARY(pyembed=True)

Python helper libraries don't have any modules and having something like
'.cpython-34m' in the name, e.g. STATIC_pytalloc-util.cpython-34m_MODULES
breaks the build.

Another way to fix this would be removing PYTHON_SO_ABI_FLAG from the name.

This allows --extra-python=/usr/bin/python3 to work on Ubuntu 14.04.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>

buildtools/wafsamba/samba_deps.py

@@ -214,6 +214,9 @@ def add_init_functions(self):
     if m is not None:
         modules.append(m)
 
+    if 'pyembed' in self.features:
+        return
+
     sentinel = getattr(self, 'init_function_sentinel', 'NULL')
 
     targets    = LOCAL_CACHE(bld, 'TARGET_TYPE')