* ch03.xml: mention versioned symbolic links -- generalize explanation
of 'add', 'rm' commands, and desciptions of 'svn st' output.
* ch05.xml: update output text of new non-blocking 'svnadmin recover'.
* ch07.xml: new 'svn:special' sections documents versioned symbolic
link behavior. Document new 'store-passwords' runtime variable.
* ch06.xml: in the svn+ssh:// "checklist", no need to tell people to
run 'chmod g+s repos/db/' anymore. 'svnadmin create' does that now.
Explain the new 'svnadmin dump --deltas' switch.
* ch08.xml: replace SVN_REVNUM_T_FMT with %ld in sample code.
* ch09.xml: mention versioned symbolic links in 'svn add' reference.
mention new --deltas switch to 'svnadmin dump'.
document the new 'svnadmin create --fs-type TYPE' option.
document the new 'svnadmin recover --wait' option.
document the new 'svn export --native-eol EOL' option.
