Version Control With Subversion Source

Fix typo in "svn merge" reference page.
Patch by Jochem Schulenklopper <jschulenklopper@...>.

* en/book/ch09.xml

Change 'use-case' to 'use case' throughout, on the basis the second form being
completely dominant in the top few pages of Google results.

* en/TODO: Remove to-do.

* en/book/appc.xml:
* en/book/ch00.xml:
* en/book/ch03.xml:
* en/book/ch05.xml:
* en/book/ch07.xml:
Change.

Book Spanish. Added aspell ignore list. Spell checked ch07.xml. Noted
down this chapter as translated.

Book Spanish. Updated build instructions.

Typo fixes in the Norwegian svnbook.

* src/nb/book/ch04.xml
Typo fixes.

Typo fix in chapter 4.

* src/en/book/ch04.xml
(svn-ch-4-sect-3.2): Move period outside parentheses.

Norwegian svnbook: Set the working copy into "commit mode" after make
sync is finished. No need for editing mode in this case now that
numerical entities are history.

* src/nb/Makefile
(sync): Add a "$(MAKE) commitmode" before the lockdir is removed.

Synchronise the English and Norwegian svnbook with "make sync". Updated
changes between r1223:1240.

* src/nb/LAST_UPDATED
Updated to 1240 by "make sync".

* src/nb/README
Merged r1228.

* src/nb/REVIEW
Merged r1229.

* src/nb/TODO
Merged r1231, r1232, r1233, r1234.

* src/nb/book/ch04.xml
Merged and updated r1231, r1232, r1235, r1238. New "The Key Concept
Behind Merging" section.

* src/nb/book/ch06.xml
Merged r1232.

Update the revision number in src/nb/LAST_UPDATED to 1223 to get past
the replacement of Makefile when running "make sync".

* src/nb/LAST_UPDATED
Updated to "1223".

Sync between English and Norwegian version: Merge changes between
r1214:1221 from src/en to src/nb . Can’t use the usual "make sync",
nb/Makefile gets into a strange non-revertable state because of the
replace in r1223, so it has to be tweaked manually.

* src/nb/LAST_UPDATED
Manually set to 1221.

* src/nb/book/ch07.xml
* src/nb/book/ch08.xml
Merged r1219.