Merge branch 'rdm/update-dependencies' into 'master'

Update various dependencies

See merge request !4

configure.ac

 ##
 ## Configure Nolimips: a MIPS emulator with unlimited registers.
 ##
- AC_PREREQ([2.63])
+ AC_PREREQ([2.64])
 
 
 ## Project -----------------------------

dev/nolimips.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 ##
 ## This file is part of Nolimips, a MIPS simulator with unlimited registers
 ## Copyright (C) 2003, 2004, 2005, 2006, 2015 Benoit Perrot <benoit@lrde.epita.fr>

doc/inst-set.texi.gen.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 ##
 ## This file is part of Nolimips, a MIPS simulator with unlimited registers
 ## Copyright (C) 2003, 2004, 2015 Benoit Perrot <benoit@lrde.epita.fr>

src/inst/nodes.gen.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 ##
 ## This file is part of Nolimips, a MIPS simulator with unlimited registers
 ## Copyright (C) 2003, 2004, 2006, 2015 Benoit Perrot <benoit@lrde.epita.fr>

src/inst/nodes.mk.gen.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 ##
 ## This file is part of Nolimips, a MIPS simulator with unlimited registers
 ## Copyright (C) 2003, 2004, 2015 Benoit Perrot <benoit@lrde.epita.fr>

src/inst/program_builder.hh.gen.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 ##
 ## This file is part of Nolimips, a MIPS simulator with unlimited registers
 ## Copyright (C) 2003, 2004, 2006, 2015 Benoit Perrot <benoit@lrde.epita.fr>

src/inst/program_solver.gen.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 ##
 ## This file is part of Nolimips, a MIPS simulator with unlimited registers
 ## Copyright (C) 2003, 2004, 2006, 2015 Benoit Perrot <benoit@lrde.epita.fr>

src/parse/asm-parse.yy.gen.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 ##
 ## This file is part of Nolimips, a MIPS simulator with unlimited registers
 ## Copyright (C) 2003, 2004, 2006, 2012, 2015 Benoit Perrot <benoit@lrde.epita.fr>
@@ -55,7 +55,7 @@ print ("""
 using namespace inst;
 %}
 
-%require "2.1a"
+%require "3.0"
 %skeleton "lalr1.cc"
 %define parse.error verbose
 %defines

src/parse/asm-scan.ll.gen.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 ##
 ## This file is part of Nolimips, a MIPS simulator with unlimited registers
 ## Copyright (C) 2003, 2004, 2006, 2015 Benoit Perrot <benoit@lrde.epita.fr>