Fix jump effect after break in same line

From the OpenMPT MOD test case: "A Bxx command should reset the effect of
a Dxx command that is left of the Bxx command."

Signed-off-by: Claudio Matsuoka <cmatsuoka@gmail.com>
[test] Add OpenMPT MOD PatternJump test case

Signed-off-by: Claudio Matsuoka <cmatsuoka@gmail.com>
[test] Add OpenMPT MOD PortaSmpChange test case

Signed-off-by: Claudio Matsuoka <cmatsuoka@gmail.com>