pgsql: Update Emacs/vim editor info.

Log Message:
-----------
Update Emacs/vim editor info.

Modified Files:
--------------
    pgsql/doc/src/FAQ:
        FAQ_DEV.html (r1.116 -> r1.117)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/FAQ/FAQ_DEV.html.diff?r1=1.116&r2=1.117)
    pgsql/doc/src/sgml:
        sources.sgml (r2.17 -> r2.18)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/sources.sgml.diff?r1=2.17&r2=2.18)

Added Files:
-----------
    pgsql/src/tools/editors:
        emacs.samples (r1.1)

(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/tools/editors/emacs.samples?rev=1.1&content-type=text/x-cvsweb-markup)
        vim.samples (r1.1)

(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/tools/editors/vim.samples?rev=1.1&content-type=text/x-cvsweb-markup)