hg: jdk7u/jdk7u/langtools: Added tag jdk7u4-b12 for changeset a4bf6a1aff54

[david . katleman]

Changeset: 909965251d5b
Author:    katleman
Date:      2012-02-16 13:01 -0800
URL:       http://hg.openjdk.java.net/jdk7u/jdk7u/langtools/rev/909965251d5b

Added tag jdk7u4-b12 for changeset a4bf6a1aff54

! .hgtags