Uncap library requirements for liberty

Change-Id: I9a7cda0686252c55ae4d2c80ae116bf22a751e2b
Depends-On: Ib948b756b8e6ca47a4c9c44c48031e54b7386a06

requirements.txt

@@ -1,3 +1,6 @@
+# The order of packages is significant, because pip processes them in the order
+# of appearance. Changing the order has an impact on the overall integration
+# process, which may cause wedges in the gate later.
 pbr>=0.6,!=0.7,<1.0
 Babel>=1.3
 pycrypto>=2.6

setup.py

@@ -17,6 +17,14 @@
 # THIS FILE IS MANAGED BY THE GLOBAL REQUIREMENTS REPO - DO NOT EDIT
 import setuptools
 
+# In python < 2.7.4, a lazy loading of package `pbr` will break
+# setuptools if some other modules registered functions in `atexit`.
+# solution from: http://bugs.python.org/issue15881#msg170215
+try:
+    import multiprocessing  # noqa
+except ImportError:
+    pass
+
 setuptools.setup(
     setup_requires=['pbr'],
     pbr=True)

test-requirements.txt

@@ -1,11 +1,14 @@
+# The order of packages is significant, because pip processes them in the order
+# of appearance. Changing the order has an impact on the overall integration
+# process, which may cause wedges in the gate later.
 hacking>=0.9.1,<0.10
 
 coverage>=3.6
 discover
 fixtures>=0.3.14
 python-subunit>=0.0.18
-sphinx>=1.2.1,<1.3
-oslosphinx
+sphinx>=1.1.2,!=1.2.0,!=1.3b1,<1.3
+oslosphinx>=2.5.0  # Apache-2.0
 testrepository>=0.0.18
 testscenarios>=0.4
-testtools>=0.9.34
+testtools>=0.9.36,!=1.2.0