The attached diff updates books/svnbook to 1.7. The only changes to the Makefile before adding the space before each "=" looked like this:
--- Makefile 15 Nov 2010 12:47:38 -0000 1.5 +++ Makefile 6 Apr 2012 04:18:13 -0000 @@ -2,10 +2,9 @@ COMMENT= Version Control with Subversion -V= 1.5 +V= 1.7 DISTNAME= svn-book-html-chunk PKGNAME= svnbook-${V} -REVISION= 0 CATEGORIES= books devel HOMEPAGE= http://svnbook.red-bean.com/ ok? -ME
svnbook.diff
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