Issue 54 in svnbook: ch04: merge example shows wrong revision

[svnbook at googlecode.com]

Comment #4 on issue 54 by ptbu... at gmail.com: ch04: merge example shows  
wrong revision
http://code.google.com/p/svnbook/issues/detail?id=54

The example referenced exists only up to the 1.4 version of the book.  In  
the 1.5+ versions of the book this example is effectively replaced by the  
Keeping a Branch in Sync section.