redhat_readme.txt: (1) Fixed instructions for pg_hba.conf which caused psycopg2 bugs, (2) renumbered sections, (3) added table of contents.
redhat_readme.txt: (1) Fixed instructions for pg_hba.conf which caused psycopg2 bugs, (2) renumbered sections, (3) added table of contents.

jtakayama/makahiki-draft,jtakayama/makahiki-draft,yongwen/makahiki,yongwen/makahiki,yongwen/makahiki,yongwen/makahiki,csdl/makahiki,jtakayama/makahiki-draft,csdl/makahiki,csdl/makahiki,jtakayama/makahiki-draft,csdl/makahiki