Add pre-commit and post-commit hooks for use on dev systems.

As well as a little script to automatically configure them.

(imported from commit c2e7f990f5f2091b5bebdd1b3dad402457943c95)

tools/post-commit

@@ -0,0 +1,9 @@
+#!/bin/bash
+AUTHOR=$(git log -1 HEAD | grep ^Author | sed 's/Author: //')
+if ! $(echo "$AUTHOR" | grep humbughq.com >/dev/null); then
+   echo -e "\e[0;91m  Invalid non-Humbug commit author: $AUTHOR\e[0m"
+fi
+COMMITTER=$(git log -1 HEAD --pretty=fuller | grep ^Commit: | sed 's/Author: //')
+if ! $(echo "$COMMITTER" | grep humbughq.com >/dev/null); then
+   echo -e "\e[0;91m  Invalid non-Humbug committer: $COMMITTER\e[0m"
+fi

tools/pre-commit

@@ -0,0 +1 @@
+./tools/check-all || true

tools/setup-git-repo

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+if ! [ -d ".git/hooks/" ]; then
+    echo "Error: Could not find .git/hooks directory"
+    echo "Please re-run this script from the root of your Humbug git checkout"
+    exit 1
+fi
+
+for hook in pre-commit post-commit; do
+    ln -snf ../../tools/"$hook" .git/hooks/
+done