Version Control With Subversion Source

Daniel Rall noticed that this documentation might be lacking, and
Philip Martin confirmed it, here:

http://subversion.tigris.org/servlets/ReadMsg?list=dev&msgNo=100837
http://subversion.tigris.org/servlets/ReadMsg?list=dev&msgNo=100843

* src/en/book/ch03.xml
(CVS Users: Hold That Update!): Give an example of ' C' for property
conflicts.

* src/en/book/ch09.xml
(svn status): Make it clear that 'C' in the first column is about
content conflicts, not property conflicts.