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

RSVN="`pwd`/rsvn.py"
export PATH=/bin:/usr/bin
mkdir temp
cd temp

svnadmin create repo
svn co file://`pwd`/repo wc

cd wc
mkdir trunk branches
cd trunk
for a in alpha beta gamma ; do
    echo $a > $a
done
cd ..
svn add *
svn ci -m 'initial'

svn up
svn cp trunk branches/test
svn ci -m 'branch'

svn up
echo foo >> branches/test/alpha
svn ci -m 'Mod.'

cd ..
echo rdelete trunk > tmp
echo rcopy branches/test trunk >> tmp
python $RSVN --message=blah --username=evil `pwd`/repo < tmp

svnadmin dump repo > ../replace_trunk_with_branch.svndump