hg: code-tools/jtreg: 7900034: optionally disallow default behavior with no @run tag present

[jonathan.gibbons at oracle.com]

Changeset: 0778d78270a2
Author:    jjg
Date:      2013-02-26 17:49 -0800
URL:       http://hg.openjdk.java.net/code-tools/jtreg/rev/0778d78270a2

7900034: optionally disallow default behavior with no @run tag present

! make/tests/Basic.gmk
+ make/tests/BuildTagTest.gmk
! make/tests/T6590657.gmk
! src/share/classes/com/sun/javatest/regtest/RegressionTestFinder.java
+ src/share/test/javatest/regtest/data/buildTag/BuildTagTest.java
+ src/share/test/javatest/regtest/data/buildTag/TEST.ROOT