Introduce new framework for handling info files generation and installation.

Summary of changes:
- removal of USE_GTEXINFO
- addition of mk/texinfo.mk
- inclusion of this file in package Makefiles requiring it
- `install-info' substituted by `${INSTALL_INFO}' in PLISTs
- tuning of mk/bsd.pkg.mk:
    removal of USE_GTEXINFO
    INSTALL_INFO added to PLIST_SUBST
    `${INSTALL_INFO}' replace `install-info' in target rules
    print-PLIST target now generate `${INSTALL_INFO}' instead of `install-info'
- a couple of new patch files added for a handful of packages
- setting of the TEXINFO_OVERRIDE "switch" in packages Makefiles requiring it
- devel/cssc marked requiring texinfo 4.0
- a couple of packages Makefiles were tuned with respect of INFO_FILES and
  makeinfo command usage

See -newly added by this commit- section 10.24 of Packages.txt for
further information.

1 files changed, 83 insertions, 0 deletions

diff --git a/mk/texinfo.mk b/mk/texinfo.mk
new file mode 100644
index 00000000000..d5a2b23ee62
--- /dev/null
+++ b/mk/texinfo.mk
@@ -0,0 +1,83 @@
+# $NetBSD: texinfo.mk,v 1.1 2002/02/18 15:14:35 seb Exp $
+#
+# This Makefile fragment is included by packages that provide info files.
+#
+
+.if !defined(TEXINFO_MK)
+TEXINFO_MK=	# defined
+
+# Does the system have the GNU texinfo tools and if yes, what version are they?
+_INSTALL_INFO=	/usr/bin/install-info
+.if exists(${_INSTALL_INFO})
+.  if !defined(INSTALL_INFO_VERSION)
+_INSTALL_INFO_VERSION_OUTPUT!=  ${_INSTALL_INFO} --version 2>/dev/null
+# if install-info departs from the [0-9].[0-9] numbering scheme, the following
+# would have to be changed as well as the comparison below
+INSTALL_INFO_VERSION=	${_INSTALL_INFO_VERSION_OUTPUT:M[0-9]*.[0-9]*}
+MAKEFLAGS+=		INSTALL_INFO_VERSION=${INSTALL_INFO_VERSION}
+.  endif
+.endif
+
+# Minimum required version for the GNU texinfo tools.
+TEXINFO_REQD?= 3.12
+
+# Sort out if we need the version provided by devel/gtexinfo.
+.if defined(INSTALL_INFO_VERSION)
+.  if ${INSTALL_INFO_VERSION} < ${TEXINFO_REQD} 
+_NEED_TEXINFO=         # defined
+.  endif
+.else
+_NEED_TEXINFO=         # defined
+.endif
+
+.if defined(_NEED_TEXINFO)
+DEPENDS+=               gtexinfo>=${TEXINFO_REQD}:../../devel/gtexinfo
+EVAL_PREFIX=            _GTEXINFO_PREFIX=gtexinfo
+.else
+_GTEXINFO_PREFIX=       ${_INSTALL_INFO:C|/bin/install-info$||}
+.endif
+
+#
+# Advertise in environment which install-info and makeinfo should be used.
+#
+INSTALL_INFO=   ${_GTEXINFO_PREFIX}/bin/install-info
+MAKEINFO=       ${_GTEXINFO_PREFIX}/bin/makeinfo
+CONFIGURE_ENV+= MAKEINFO="${MAKEINFO}" INSTALL_INFO="${INSTALL_INFO}"
+MAKE_ENV+=      MAKEINFO="${MAKEINFO}" INSTALL_INFO="${INSTALL_INFO}"
+
+#
+# Another way would be to use ${SED} to substitute @MAKEINFO@, @INSTALL_INFO@
+# and bare makeinfo and install-info words  in target rules commands and in
+# Makefiles variable assignments for the files matching ${TEXINFO_PATTERNS}.
+#
+# Note: there are embeded tabs in some variables below.
+#
+TEXINFO_OVERRIDE?=	NO
+
+.if defined(TEXINFO_OVERRIDE) && (${TEXINFO_OVERRIDE} == "YES")
+TEXINFO_PATTERNS+=	Makefile.in
+# replace @MAKEINFO@ and @INSTALL_INFO@ respectively with ${MAKEINFO} and
+# ${INSTALL_INFO}
+TEXINFO_VAR_SUBST+=	MAKEINFO=${MAKEINFO:Q}
+TEXINFO_VAR_SUBST+=	INSTALL_INFO=${INSTALL_INFO:Q}
+TEXINFO_SUBST_SED=	${TEXINFO_VAR_SUBST:S/=/@!/:S/$/!g/:S/^/ -e s!@/}
+# replace bare makeinfo and install-info in MAKEINFO and INSTALL_INFO variables
+# assignments
+TEXINFO_SUBST_SED+=	-e 's!^MAKEINFO[ 	]*=[ 	]*makeinfo[ 	]*\(.*\)$$!MAKEINFO = ${MAKEINFO} \1!'
+TEXINFO_SUBST_SED+=	-e 's!^INSTALL_INFO[ 	]*=[ 	]*install-info[ 	]*\(.*\)$$!INSTALL_INFO = ${INSTALL_INFO} \1!'
+# replace bare makeinfo and install-info commands in Makefile target rules
+TEXINFO_SUBST_SED+=	-e "s!^\(	.*\)\([ 	]\)makeinfo\([ 	]\)!\1\2${MAKEINFO}\3!g"
+TEXINFO_SUBST_SED+=	-e "s!^\(	.*\)\([ 	']\)install-info\([ 	]\)!\1\2${INSTALL_INFO}\3!g"
+
+_CONFIGURE_PREREQ+=     texinfo-override
+texinfo-override:
+	${_PKG_SILENT}${_PKG_DEBUG}					\
+	(for _PATTERN in ${TEXINFO_PATTERNS}; do			\
+	  ${FIND} ${WRKSRC} -type f -name "$$_PATTERN" -print;		\
+	done; ) | ( while read _F ; do					\
+		${SED} ${TEXINFO_SUBST_SED} "$$_F" > "$$_F.new" &&	\
+		${MV} "$$_F.new" "$$_F";				\
+	done )
+.endif # TEXINFO_OVERRIDE
+
+.endif	# TEXINFO_MK