Fix the socket tests so they can be run concurrently. Backport candidate
tree9538c27b55dce311eeb77df6d1de5c3791ae00f8
drwxr-xr-x - Demo
drwxr-xr-x - Doc
drwxr-xr-x - Grammar
drwxr-xr-x - Include
-rw-r--r-- 13548 LICENSE
drwxr-xr-x - Lib
drwxr-xr-x - Mac
-rw-r--r-- 34669 Makefile.pre.in
drwxr-xr-x - Misc
drwxr-xr-x - Modules
drwxr-xr-x - Objects
drwxr-xr-x - PC
drwxr-xr-x - PCbuild
drwxr-xr-x - PCbuild8
drwxr-xr-x - Parser
drwxr-xr-x - Python
-rw-r--r-- 54300 README
drwxr-xr-x - RISCOS
drwxr-xr-x - Tools
-rwxr-xr-x 630847 configure
-rw-r--r-- 94691 configure.in
-rwxr-xr-x 7122 install-sh
-rw-r--r-- 26708 pyconfig.h.in
-rw-r--r-- 65603 setup.py