Version Control With Subversion Source

* en/book/ref-svn.xml
* en/book/ref-svnmucc.xml
Fix some typos.

1.8/zh: svnmucc reference translated and reviewed

* en/book/ch03-advanced-topics.xml:
Change the wording "working-copy-less modifications" to "modifications
without a working copy" to match a similar change committed in r5957.
The previous wording could be confusing, especially to non-native
English speakers.

Found by: Daniel Shahaf
Patch by: Nathan Hartman (hartman.nathan \at\ g mail)
(Tweaked by me)

* en/book/ref-svnmucc.xml:
(svn.ref.svnmucc): Spell out the meaning of the term "working-copy-less".
The previous wording can be confusing to some, especially to non-native
English speakers.

Found by: wuzhouhui
Patch by: Nathan Hartman (hartman.nathan \at\ g mail)

1.8/zh: translation of svnmucc reference in progress

1.8/zh: svndumpfilter reference translated and reviewed

* en/book/ref-svnrdump.xml
Fix a typo.

1.8/zh: svnrdump reference translated and reviewed

1.8/zh: svnsync reference reviewed

* en/book/ref-svnsync.xml
Fix some typos.