#547 Build fails on systems where /usr/bin/python is Python 3

[Marat Radchenko]

home/irina/marat/elftoolchain/test/libelf/tset/bin/elfc -o check_elf.msb32
  File "/home/irina/marat/elftoolchain/test/libelf/tset/bin/elfc", line 426
    v = 0L
         ^
SyntaxError: invalid syntax
*** Error code 1

Stop.
pmake: stopped in /home/irina/marat/elftoolchain/test/libelf/tset/common

Attached patch fixes the problem.

[Ed Maste]

python 2 is EOL, we need to migrate ELF Tool Chain to use python 3

[Joseph Koshy]

The source tree has been migrated to Python 3, as of [r3868].