Version Control With Subversion Source

* en/book/ch08.xml: Add omitted libsvn_diff to the library summary table,
and rephrase libsvn_delta and libsvn_ra_svn descriptions.
Update 'svn --version' <screen> section.
Say '<Location> directive' not 'Location directive', when referring to the
Apache <Location> container directive.
Plurality typo fix: Subversion has more than one datatype!
Update 'svn checkout' <screen> section.
Update references to 'HACKING' to 'www/hacking.html'.

Book Spanish. Updated information about web source.

* src/en/book/ch00.xml
* src/en/book/ch08.xml
s/sysadmin/system administrator/. Patch sorta kinda by Martin A. Brooks
<martin@...>.

* COMMITTERS (avcastoldi, roberti): Add two new pt_BR translators.

* en/book/ch02.xml: Update <screen> sections for current output formats.

* en/book/appa.xml: Update for current output formats.
Fix error in TODO comment (it is status -v which needs documenting, not -u).
Fix plurality typo.

Tweaks with the aim of enhancing the re-usability of the buildsystem elsewhere.

* src/tools/Makefile.base-vars
(INSTALL_DIR, OUTNAME): Make generic.

* src/tools/Makefile.base
(INSTALL_DIR, OUTNAME): Override with specifics.

* src/tools/fo-stylesheet.xsl: Refer to admonition graphics relative to .fo
file, not relative to FOP invocation directory.

* src/tools/dtd/dblite.dtd: Update to O'Reilly DocBook Lite v0.5.

More updates to the Norwegian book, merged r1796:1881 from the English
files.

* src/nb/LAST_UPDATED
Updated by "make sync HEAD=1881".

* src/nb/book/appa.xml
* src/nb/book/appb.xml
* src/nb/book/ch01.xml
* src/nb/book/ch03.xml
* src/nb/book/ch04.xml
* src/nb/book/ch07.xml
* src/nb/book/ch09.xml
Updated r1831, r1863, r1865, r1874.

* en/book/appc.xml: Re-word to be merely extremely short, rather than obviously
under construction.