Py2: do not open Init[Gui].py files with utf-8 encoding

src/App/FreeCADInit.py

@@ -172,9 +172,12 @@ def InitApplications():
 			if (os.path.exists(InstallFile)):
 				try:
 					# XXX: This looks scary securitywise...
-
-					with codecs.open(filename=InstallFile, encoding="utf-8") as f:
-						exec(f.read())
+					if sys.version_info.major < 3:
+						with open(InstallFile) as f:
+							exec(f.read())
+					else:
+						with open(file=InstallFile, encoding="utf-8") as f:
+							exec(f.read())
 				except Exception as inst:
 					Log('Init:      Initializing ' + Dir + '... failed\n')
 					Log('-'*100+'\n')
@@ -630,7 +633,6 @@ FreeCAD.Logger = FCADLogger
 # init every application by importing Init.py
 try:
 	import traceback
-	import codecs
 	InitApplications()
 except Exception as e:
 	Err('Error in InitApplications ' + str(e) + '\n')

src/Gui/FreeCADGuiInit.py

@@ -108,7 +108,6 @@ class NoneWorkbench ( Workbench ):
 
 def InitApplications():
     import sys,os,traceback
-    import codecs
     try:
         # Python3
         import io as cStringIO
@@ -126,8 +125,12 @@ def InitApplications():
             if (os.path.exists(InstallFile)):
                 try:
                     # XXX: This looks scary securitywise...
-                    with codecs.open(filename=InstallFile, encoding="utf-8") as f:
-                        exec(f.read())
+                    if sys.version_info.major < 3:
+                        with open(InstallFile) as f:
+                            exec(f.read())
+                    else:
+                        with open(file=InstallFile, encoding="utf-8") as f:
+                            exec(f.read())
                 except Exception as inst:
                     Log('Init:      Initializing ' + Dir + '... failed\n')
                     Log('-'*100+'\n')