Merge pull request ESCOMP#162 from ESMCI/fischer/python3

Change shebang lines to python3

User interface changes?: [No
[ If yes, describe what changed, and steps taken to ensure backward compatibilty ]

Fixes: ESCOMP#160

Testing:
test removed:
unit tests: Ran 118 tests in 0.041s
system tests:
manual testing: Ran checkout_externals -o and checkout_externals -S for cesm2_3

checkout_externals

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 """Main driver wrapper around the manic/checkout utility.
 

manic/checkout.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 """
 Tool to assemble repositories represented in a model-description file.

manic/externals_description.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 """Model description
 

manic/utils.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 """
 Common public utilities for manic package
 

test/test_sys_checkout.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 """Unit test driver for checkout_externals
 

test/test_sys_repository_git.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 """Tests of some of the functionality in repository_git.py that actually
 interacts with git repositories.

test/test_unit_externals_description.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 """Unit test driver for checkout_externals
 

test/test_unit_externals_status.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 """Unit test driver for the manic external status reporting module.
 

test/test_unit_repository.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 """Unit test driver for checkout_externals
 

test/test_unit_repository_git.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 """Unit test driver for checkout_externals
 

test/test_unit_repository_svn.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 """Unit test driver for checkout_externals
 

test/test_unit_utils.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 """Unit test driver for checkout_externals