pt_BR.ISO8859-1/books/handbook: New pt_BR translation into .po format

* content synchronized with en_US document (r52873)
* book.xml converted to .po
* .po file was translated to pt_BR
* .po and .xml file has been set to UTF-8 encoding
* information about volunteers who translated and/or revised the document was added to the header of the .po file.

Obtained from: The FreeBSD Brazilian Portuguese Documentation Project

pt_BR.ISO8859-1/books/Makefile

@@ -8,6 +8,7 @@
 SUBDIR+= dev-model
 SUBDIR+= faq
 SUBDIR+= fdp-primer
+SUBDIR+= handbook
 SUBDIR+= porters-handbook
 
 DOC_PREFIX?= ${.CURDIR}/../..

pt_BR.ISO8859-1/books/handbook/Makefile

@@ -6,10 +6,10 @@
 # The FreeBSD Documentation Project
 # The FreeBSD Brazilian Portuguese Documentation Project
 #
-# Original revision: 1.53
+# Original revision: r52873 
 #
 
-MAINTAINER=lioux@FreeBSD.org
+MAINTAINER=ebrandi@FreeBSD.org
 
 DOC?= book