Version Control With Subversion Source

* en/book/ch04-branching-and-merging.xml

(svn.branchmerge.basicmerging.mergeinfo): Add a sidebar on mergeinfo
inheritance.

(svn.branchmerge.nomergedata): Tweak 'Natural History and Implicit
Mergeinfo' sidebar to account for the fact that we already defined
'explicit mergeinfo'.

* en/book/ch04-branching-and-merging.xml

(svn.branchmerge.basicmerging.mergeinfo): Move the tip about "mergeinfo"
from here...

(svn.branchemerge.basicmerging.stayinsync): ...back to here, which is
the first place we use the term. Also use the <firstterm> tag.

Suggested by: cmpilato

* en/book/ch09-reference.xml
(svn.ref.svn.sw): Document the other forms the --change
option supports.

* en/book/ch04-branching-and-merging.xml
(svn.branchmerge.basicmerging.mergeinfo): Add a tip explaining
that "mergeinfo" is just shorthand for the svn:mergeinfo
property. We use this shorthand a bit in the book, but more
importantly it is used extensively everywhere else. Also
add "mergeinfo" to the index.

* en/book/ch04-branching-and-merging.xml
(svn.branchmerge.basicmerging.mergeinfo): Describe the new 1.7
notifications which occur when a merge updates mergeinfo to
describe a merge (as opposed to the traditional notifications
which describe the application of a diff).

Translation of "Tunneling over SSH". Closes ticket #314 (cf.
http://www.svnbook.de/ticket/314).

Trivial grammar fix.

"interactively" -> "interactive"

Add release date for Subversion 1.7

"(???)" -> "(October 2011)"

Apply 1.7-style notifications to all 'svn merge' examples.

* en/book/ch04-branching-and-merging.xml
* en/book/ch09-reference.xml

* en/book/ch04-branching-and-merging.xml
(svn.branchemerge.basicmerging.stayinsync): Fix some typos and throw
<command> tags around some subcommands.