configure: set new macro __MONKEY_GIT__ (devel/release)

Signed-off-by: Eduardo Silva <edsiper@gmail.com>
Monkey v1.2.0

Signed-off-by: Eduardo Silva <edsiper@gmail.com>
Update ChangeLog for v1.2.0

Signed-off-by: Eduardo Silva <edsiper@gmail.com>
Development of Monkey v1.3 begins

Signed-off-by: Eduardo Silva <edsiper@gmail.com>