tdf#103363: add unicodedata and import idna encoding for mailmerge

Thank you Moggi for your help on how to add unicodedata module to Python!

Change-Id: I071e9279d1de4748f9443ac2d624fe925288e408
Reviewed-on: https://gerrit.libreoffice.org/32140Reviewed-by: Julien Nabet <serval2412@yahoo.fr>
Tested-by: Julien Nabet <serval2412@yahoo.fr>

external/python3/ExternalPackage_python3.mk

@@ -112,6 +112,7 @@ $(eval $(call gb_ExternalPackage_add_files,python3,$(LIBO_BIN_FOLDER)/python-cor
 	LO_lib/_testcapi.cpython-$(PYTHON_VERSION_MAJOR).$(PYTHON_VERSION_MINOR)m.so \
 	LO_lib/_testimportmultiple.cpython-$(PYTHON_VERSION_MAJOR).$(PYTHON_VERSION_MINOR)m.so \
 	LO_lib/_testmultiphase.cpython-$(PYTHON_VERSION_MAJOR).$(PYTHON_VERSION_MINOR)m.so \
+	LO_lib/unicodedata.cpython-$(PYTHON_VERSION_MAJOR).$(PYTHON_VERSION_MINOR)m.so \
 	LO_lib/xxlimited.cpython-$(PYTHON_VERSION_MAJOR).$(PYTHON_VERSION_MINOR)m.so \
 	LO_lib/zlib.cpython-$(PYTHON_VERSION_MAJOR).$(PYTHON_VERSION_MINOR)m.so \
 ))

external/python33/ExternalPackage_python3.mk

@@ -106,6 +106,7 @@ $(eval $(call gb_ExternalPackage_add_files,python3,$(LIBO_BIN_FOLDER)/python-cor
 	LO_lib/_testbuffer.cpython-$(PYTHON_VERSION_MAJOR)$(PYTHON_VERSION_MINOR)m.so \
 	LO_lib/_testcapi.cpython-$(PYTHON_VERSION_MAJOR)$(PYTHON_VERSION_MINOR)m.so \
 	LO_lib/time.cpython-$(PYTHON_VERSION_MAJOR)$(PYTHON_VERSION_MINOR)m.so \
+	LO_lib/unicodedata.cpython-$(PYTHON_VERSION_MAJOR)$(PYTHON_VERSION_MINOR)m.so \
 	LO_lib/zlib.cpython-$(PYTHON_VERSION_MAJOR)$(PYTHON_VERSION_MINOR)m.so \
 ))
 endif

scripting/source/pyprov/mailmerge.py

@@ -17,6 +17,7 @@ import unohelper
 import uno
 import re
 import os
+import encodings.idna
 
 #to implement com::sun::star::mail::XMailServiceProvider
 #and