Fix doc.1 build when NOPORTS is defined. This includes

the following ports tree changes:

- libtool13 removed.
- pkgconfig moved to pkg-config.
- Default dependency for USE_GHOSTSCRIPT changed from
  ghostscript-gnu to ghostscript-gpl.
- Also added missing docproj dependencies.

Reported by:	Dmitriy Kirhlarov
Submitted by:	sem, ru
MFC after:	3 days

release/Makefile.inc.docports

@@ -28,9 +28,8 @@ MINIMALDOCPORTS+= \
 	ports/converters/libiconv \
 	ports/devel/gettext \
 	ports/devel/gmake \
-	ports/devel/libtool13 \
 	ports/devel/libtool15 \
-	ports/devel/pkgconfig \
+	ports/devel/pkg-config \
 	ports/graphics/gd \
 	ports/graphics/jbigkit \
 	ports/graphics/jpeg \
@@ -39,8 +38,8 @@ MINIMALDOCPORTS+= \
 	ports/graphics/scr2png \
 	ports/graphics/tiff \
 	ports/print/freetype2 \
-	ports/print/ghostscript-gnu \
-	ports/print/ghostscript-gnu-nox11 \
+	ports/print/ghostscript-gpl \
+	ports/print/ghostscript-gpl-nox11 \
 	ports/print/gsfonts \
 	ports/textproc/docbook-410 \
 	ports/textproc/docbook-xml \
@@ -48,7 +47,9 @@ MINIMALDOCPORTS+= \
 	ports/textproc/docproj \
 	ports/textproc/dsssl-docbook-modular \
 	ports/textproc/expat2 \
+	ports/textproc/fixrtf \
 	ports/textproc/html \
+	ports/textproc/html2text \
 	ports/textproc/iso8879 \
 	ports/textproc/libxml2 \
 	ports/textproc/libxslt \
@@ -57,6 +58,7 @@ MINIMALDOCPORTS+= \
 	ports/textproc/sdocbook-xml \
 	ports/textproc/xhtml \
 	ports/textproc/xmlcatmgr \
+	ports/textproc/xmlcharent \
 	ports/www/links1 \
 	ports/www/tidy