Complete The Signature Introspection

The signature module has been quite far developed.
In the course of making things fit for the TypeErrors with
the signature module, now also all signatures from all
shiboken modules are queried.

Instead of writing an extra signature existence test for
shiboken, it made more sense to extend the existing
init_platform.py by the shiboken modules.

In fact, by this query a corner case was exploited that
worked on Python 2 but assertion-crashed on Python 3.

The mapping.py modules were also completed to support
all new PySide2 modules.

Special care had to be taken because the "shiboken2" module
exists both as directory and as binary module. The fix was
tricky, and I will add a task that replaces such workarounds
by a better design.

Task-number: PYSIDE-510
Change-Id: Ibf8e322d1905976a0044a702ea178b7f98629fb4
Reviewed-by: Christian Tismer <tismer@stackless.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/ez_setup.py b/ez_setup.py
index ddc630e7a..eb37479b9 100644
--- a/ez_setup.py
+++ b/ez_setup.py
@@ -224,7 +224,7 @@ def download_file_powershell(url, target):
         "[System.Net.CredentialCache]::DefaultCredentials; "
         "(new-object System.Net.WebClient).DownloadFile({}, {})".format(
             url, target))
-    )
+#    )
     cmd = [
         'powershell',
         '-Command',