CodeReview: Modified the first argument to svnImport.php so it is now possible to specify * to import from all defined repositories. This meant moving the import code into a function (as it is called multiple times). For simplicity I have left that function in svnImport.php but feel free to move it elsewhere if that seems more appropriate.
I have also updated the usage notes to give more information on this and the --precache argument I added in my last commit.
[NOTE: It will be a lot easier to review this commit if you un-indent the new function body first...]