[vsipl++] [patch] Always include csl-docbook/GNUmakefile.inc

[Brooks Moses]

Jules Bergmann wrote, at 8/21/2008 2:05 PM:
> The install-pdf rule uses the install_pdf_template defined in 
> csl-docbook's GNUmakefile.inc, ergo the makefile needs to be included 
> even when not in maintainer mode.
> 
> Patch applied.

FWIW, this will be a problem for our distribution of the source package
if we decide not to ship csl_docbook with it at some point in the
future, as it means that not having a csl_docbook tree will break the build.

- Brooks