Preparation to support translations with python3

Thanks to José.

development/cmake/doc/ReplaceValues.py

@@ -1,5 +1,7 @@
 #! /usr/bin/env python
 
+from __future__ import print_function
+
 # file ReplaceValues.py
 #
 # This file is part of LyX, the document processor.
@@ -32,7 +34,7 @@ def SubstituteDataInLine(line):
 
 def SubstituteDataInFile(InFile):
     for line in open(InFile):
-        print SubstituteDataInLine(line[:-1])
+        print(SubstituteDataInLine(line[:-1]))
 
 ##########################################
 

development/cmake/po/cat.py

@@ -1,5 +1,7 @@
 #! /usr/bin/env python
 
+from __future__ import print_function
+
 import sys
 from getopt import getopt
 
@@ -18,7 +20,7 @@ for (opt, param) in options:
 	if opt == "-o":
 		outfile = param
 	elif opt == "-h":
-		print usage
+		print(usage)
 		sys.exit(0)
 
 out = sys.stdout

development/cmake/po/dos2unix.py

@@ -4,14 +4,14 @@
 import sys
 
 for fname in sys.argv[1:]:
-    infile = open( fname, "rb" )
+    infile = open( fname, "r" )
     instr = infile.read()
     infile.close()
     outstr = instr.replace( "\r\n", "\n" ).replace( "\r", "\n" )
 
-    if len(outstr) == len(instr):
+    if outstr == instr:
         continue
     
-    outfile = open( fname , "wb" )
+    outfile = open( fname , "w" )
     outfile.write( outstr )
-    outfile.close()
+    outfile.close()