fix problem when Beremiz is running without matiec installed

set matiec settings only once on first use of ProjectController class and give
user-friendly message on compilation about missing matiec
installation.


Traceback (most recent call last):
File "Beremiz.py", line 197, in <module>
beremiz.Start()
File "Beremiz.py", line 192, in Start
self.CreateApplication()
File "Beremiz.py", line 130, in CreateApplication
self.BackgroundInitialization()
File "Beremiz.py", line 137, in BackgroundInitialization
self.ImportModules()
File "Beremiz.py", line 176, in ImportModules
import BeremizIDE
File
"BeremizIDE.py", line 76, in <module>
from ProjectController import ProjectController, GetAddMenuItems,
MATIEC_ERROR_MODEL, ITEM_CONFNODE
File
"ProjectController.py", line 177, in <module>
iec2c_cfg = Iec2CSettings()
File
"ProjectController.py", line 101, in __init__
self.ieclib_c_path = self.findLibCPath()
File
"ProjectController.py", line 135, in findLibCPath
os.path.join(self.ieclib_path, "C"),
File "/usr/lib/python2.7/posixpath.py", line 70, in join
elif path == '' or path.endswith('/'):
AttributeError: 'NoneType' object has no attribute 'endswith'

     1

# SOME DESCRIPTIVE TITLE.

     2

# Copyright (C) is 21st century inquisition

     3

# This file is distributed under the same license as the Beremiz package.

     4

# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.

     5

#

     6

msgid ""

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msgstr ""

     8

"Project-Id-Version: Beremiz 1.1\n"

     9

"Report-Msgid-Bugs-To: \n"

    10

"POT-Creation-Date: 2012-09-08 00:39\n"

    11

"PO-Revision-Date: 2012-09-07 10:48+0100\n"

    12

"Last-Translator: \n"

    13

"Language-Team: \n"

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"Language: \n"

    15

"MIME-Version: 1.0\n"

    16

"Content-Type: text/plain; charset=UTF-8\n"

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"Content-Transfer-Encoding: 8bit\n"

    18

"X-Poedit-Language: French\n"

    19

"X-Poedit-Country: FRANCE\n"

    20

"X-Poedit-SourceCharset: utf-8\n"

    21

    22

# e69e0ee137df409290c6c6a5fbd512a6

    23

#: ../../index.rst:4

    24

msgid "Beremiz's documentation"

    25

msgstr "Documentation de Beremiz"

    26

    27

# 7a5a9d62913b477b99421d5dc94a44be

    28

#: ../../index.rst:6

    29

msgid "Contents:"

    30

msgstr "Contenu"

    31

    32

# 899ecb5f4ff84b8e98dbf5b1eaf7f393

    33

#~ msgid "Indices and tables"

    34

#~ msgstr "Index et tables"