pgloader - pgloader: Using semaphores to control how many max threads

Log Message:
-----------
Using semaphores to control how many max threads run at any given time

Modified Files:
--------------
pgloader:
pgloader.py (r1.22 -> r1.23)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgloader/pgloader/pgloader.py.diff?r1=1.22&r2=1.23)
pgloader/pgloader:
options.py (r1.16 -> r1.17)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgloader/pgloader/pgloader/options.py.diff?r1=1.16&r2=1.17)
pgloader.py (r1.24 -> r1.25)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgloader/pgloader/pgloader/pgloader.py.diff?r1=1.24&r2=1.25)