pg-migrator - pg_migrator: Fix handling of multiple table extents.

Log Message:
-----------
Fix handling of multiple table extents.

Rename tablespaces to .old, not _old.

Use append mode for log file so all output is saved.

Modified Files:
--------------
    pg_migrator/func:
        pg_migrator.c (r1.2 -> r1.3)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pg-migrator/pg_migrator/func/pg_migrator.c.diff?r1=1.2&r2=1.3)
    pg_migrator/src:
        file.c (r1.11 -> r1.12)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pg-migrator/pg_migrator/src/file.c.diff?r1=1.11&r2=1.12)
        info.c (r1.10 -> r1.11)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pg-migrator/pg_migrator/src/info.c.diff?r1=1.10&r2=1.11)
        option.c (r1.13 -> r1.14)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pg-migrator/pg_migrator/src/option.c.diff?r1=1.13&r2=1.14)
        pg_migrator.c (r1.22 -> r1.23)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pg-migrator/pg_migrator/src/pg_migrator.c.diff?r1=1.22&r2=1.23)
        pg_migrator.h (r1.21 -> r1.22)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pg-migrator/pg_migrator/src/pg_migrator.h.diff?r1=1.21&r2=1.22)
        relfilenode.c (r1.15 -> r1.16)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pg-migrator/pg_migrator/src/relfilenode.c.diff?r1=1.15&r2=1.16)