Cleaning up some testing stuff.

- The Makefiles now run btest with "-f diag.log" so that diangnostics
  output will always be written into that file.

- Makefiles now hardcode path to btest to avoid picking up the wrong version
  if in PATH.

- The canonifier scripts now live in testing/scripts, and they are
  used from both btest/ and external/.

- There's a new diff-remove-uids scripts that removed connection UIDs
  for diffing. The external/* tests now use that by default.

- Timestamp removal now has its own script: diff-remove-timestamps.
  diff-canonifier calls that.

- All Makefile have a "brief" target that runs btest with -b.

- The higher-level directories have Makefile to call the subdirs.

testing/external/scripts/create-new-repo

@@ -34,8 +34,9 @@ done
 
 ln -s ../subdir-btest.cfg ./btest.cfg
 
-cp $cwd/`dirname $0`/files/test.skeleton tests
-cp $cwd/`dirname $0`/files/Makefile .
+cp $cwd/`dirname $0`/skel/test.skeleton tests
+cp $cwd/`dirname $0`/skel/Makefile .
+cp $cwd/`dirname $0`/skel/.gitignore .
 
 git add *
 

testing/external/scripts/diff-canonifier

@@ -1,5 +0,0 @@
-#! /usr/bin/env bash
-#
-# Replace anything which looks like timestamps with XXXs.
-
-sed 's/[0-9]\{10\}\.[0-9]\{2,8\}/XXXXXXXXXX.XXXXXX/g'

testing/external/scripts/files/Makefile

@@ -1,3 +0,0 @@
-
-all:
-	@btest

testing/external/scripts/skel/.gitignore

@@ -0,0 +1 @@
+diag.log

testing/external/scripts/skel/Makefile

@@ -0,0 +1,11 @@
+
+DIAG=diag.log
+BTEST=../../../aux/btest/btest
+
+all:
+	@rm -f $(DIAG)
+	@$(BTEST) -f $(DIAG)
+
+brief:
+	@rm -f $(DIAG)
+	@$(BTEST) -b -f $(DIAG)