Common subdirectories: unitsapi.orig/tests and unitsapi/tests
Common subdirectories: unitsapi.orig/translations and unitsapi/translations
diff -up unitsapi.orig/units.xml unitsapi/units.xml
--- unitsapi.orig/units.xml	2010-05-27 12:34:00.000000000 -0400
+++ unitsapi/units.xml	2010-05-27 12:32:21.000000000 -0400
@@ -432,6 +432,14 @@
 			<source>http://physics.nist.gov/Pubs/SP811/contents.html</source>
 		</unit>
 		<unit>
+			<key>millibar</key>
+			<singular>millibar</singular>
+			<plural>millibars</plural>
+			<symbol>mb</symbol>
+			<factor>1.0 E+05</factor>
+			<source>http://physics.nist.gov/Pubs/SP811/contents.html</source>
+		</unit>
+		<unit>
 			<key>psi</key>
 			<singular>psi</singular>
 			<plural>psi</plural>
diff -up unitsapi.orig/unitsapi.module unitsapi/unitsapi.module
--- unitsapi.orig/unitsapi.module	2010-05-27 12:33:32.000000000 -0400
+++ unitsapi/unitsapi.module	2010-05-27 12:33:44.000000000 -0400
@@ -416,6 +416,8 @@ function _unitsapi_dummy_potx() {
     t('torr'),
     t('bar'),
     t('bars'),
+    t('millibar'),
+    t('millibars'),
     t('psi'),
     t('psi'),
     t('day'),