svncommands: fix layering violation & tweak error messages. Importing `SubversionException' directly from `svn.core' is a layering violation: Anything within the Subversion bindings should only be accessed via svnwrap. The advantages to doing this are twofold: we only need to intercept missing bindings in one place, and we have the option of supporting alternate bindings. As an added bonus, the recently-added support for intercepting missing Subversion bindings actually works. Two error messages are tweaked to remove `It appears...' from one error message (just blaming Subversion instead) and make both errors include the URL in the suggested command line.

#!/bin/sh
#
# Generate truncatedhistory.svndump
#

mkdir temp
cd temp

mkdir project-orig
cd project-orig
mkdir project1
mkdir project2
cd ..

svnadmin create testrepo
svnurl=file://`pwd`/testrepo
svn import project-orig $svnurl -m "init project"

svn co $svnurl project
# Make a single revision in trunk
cd project/project1
echo a > a
svn add a
svn ci -m "add a"
cd ..
svn up
# Rename the project
svn mv project1 project2/trunk
svn ci -m "rename project1"
cd project2/trunk
echo b > b
svn add b
svn ci -m "add b"
cd ../../..

svnadmin dump testrepo > ../truncatedhistory.svndump