t0030: Remove repeated instructions and add missing &&
t0030: Remove repeated instructions and add missing &&

Moved some tests to another test_expect_success block.

Many tests now reuse the same "expect" file. Also replacing
many printf "" >expect with one >expect instruction.

Added missing && which concatenated tests in some
test_expect_success blocks.

Signed-off-by: Carlos Rica <056b659bb83a98be82f41418d2b5ccd3e64ee7a8@gmail.com>
Signed-off-by: Junio C Hamano <a6723cc3f76163bf7adb636a73ac3b0ceb3e6b9b@pobox.com>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git