Add TODO2html tool to convert TODO to HTML.

src/tools/TODO2html

+#!/bin/sh
+
+# $PostgreSQL: pgsql/src/tools/TODO2html,v 1.1 2008/04/19 12:34:54 momjian Exp $:
+
+[ ! -f COPYRIGHT ] && echo "Run from top of source tree" 1>&2 && exit 1
+
+# check if txt2html is installed
+txt2html -h > /dev/null 2>&1
+if [ "$?" -gt 1 ]
+then	echo "Cannot find txt2html." 1>&2
+	echo "You must install txt2html from http://txt2html.sourceforge.net." 1>&2
+	exit 1
+fi
+
+cat doc/TODO |
+# lines with only whitespace throws off txt2html bullet formatting
+sed 's/^[ 	][ 	]*$//' |
+sed 's/^\(\* -\)\(.*\)$/\1*\2*/' |
+sed 's/^\([	][	]*o -\)\(.*\)$/\1*\2*/' |
+txt2html --xhtml -s 100 -p 100 --xhtml --titlefirst \
+	--body_deco ' bgcolor="#FFFFFF" text="#000000" link="#FF0000" vlink="#A00000" alink="#0000FF"' \
+	--caps_tag '' > doc/src/FAQ/TODO.html