Added an env-setup file for Fish

hacking/env-setup.fish

+#!/usr/bin/env fish
+# usage: source ./hacking/env-setup [-q]
+#    modifies environment for running Ansible from checkout
+set HACKING_DIR (dirname (status -f))
+set FULL_PATH (python -c "import os; print(os.path.realpath('$HACKING_DIR'))")
+set ANSIBLE_HOME (dirname $FULL_PATH)
+set PREFIX_PYTHONPATH $ANSIBLE_HOME/lib 
+set PREFIX_PATH $ANSIBLE_HOME/bin 
+set PREFIX_MANPATH $ANSIBLE_HOME/docs/man
+
+# Set PYTHONPATH
+if not set -q PYTHONPATH
+    set -gx PYTHONPATH $PREFIX_PYTHONPATH
+else
+    switch PYTHONPATH
+        case "$PREFIX_PYTHONPATH*"
+            echo "Appending PYTHONPATH"
+            set -gx PYTHONPATH $PREFIX_PYTHONPATH:$PYTHONPATH
+    end
+end
+
+# Set PATH
+if not contains $PREFIX_PATH $PATH
+    set -gx PATH $PREFIX_PATH $PATH
+end
+
+# Set MANPATH
+if not contains $PREFIX_MANPATH $MANPATH
+    if not set -q MANPATH
+        set -gx MANPATH $PREFIX_MANPATH
+    else
+        set -gx MANPATH $PREFIX_MANPATH $MANPATH
+    end
+end
+set -gx ANSIBLE_LIBRARY $ANSIBLE_HOME/library
+if set -q argv 
+    switch $argv
+    case '-q' '--quiet'
+    case '*'
+        echo ""
+        echo "Setting up Ansible to run out of checkout..."
+        echo ""
+        echo "PATH=$PATH"
+        echo "PYTHONPATH=$PYTHONPATH"
+        echo "ANSIBLE_LIBRARY=$ANSIBLE_LIBRARY"
+        echo "MANPATH=$MANPATH"
+        echo ""
+
+        echo "Remember, you may wish to specify your host file with -i"
+        echo ""
+        echo "Done!"
+        echo ""
+   end
+end