tests: change info messages from yellow/brown to cyan

Now that we've adopted a "traffic lights" coloring scheme, yellow is used for warning messages, so we need to re-color info messages to something less alarmist. Blue is a universal color for informational messages; however we are using that for skipped tests in order to align with the color schemes of other test suites. Therefore we use cyan which is also blue-ish, but visually distinct from blue. This was suggested on the list a while ago and no-one raised any objections: http://thread.gmane.org/gmane.comp.version-control.git/205675/focus=205966 An earlier iteration of this patch used bold cyan, but the point of this change is to make them less alarming; let's drop the boldness. Also paint the message to report skipping the whole thing via GIT_SKIP_TESTS mechanism in the same color as the "info" color that is used on the final summary line for the entire script. Signed-off-by: Adam Spiers <git@adamspiers.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>