Version Control With Subversion Source

1.8/zh: translation of chapter 4 in progress

Fundamental Concepts refinement - in progress

Foreword refinement - finished

Copyright refinement - finished

Preface refinement - finished

fix building error

Change Part II, Chapter I svn Reference
(The presentation of svn delete)

Further to r5520, move the </para> tag to the end of the newly-modified
paragraph.

Change Part II, Chapter I svn Reference
(The presentation of svn delete)

Note that svn delete will not delete a directory that contains an
unversioned or modified item.

(The background for this change is a discussion between myself and
C. Michael Pilato on the mailing list in early December 2017).

1.8/zh: translation of chapter 4 in progress

make consistent in the translation of “command-line client”