Testsuite: added a few more compile error test cases.

src/lib-sieve/sieve-error.c

src/lib-sieve/sieve-error.h

src/lib-sieve/sieve-validator.c

src/testsuite/tests/compile/errors.svtest

src/testsuite/tests/compile/errors/address.sieve

src/testsuite/tests/compile/errors/header.sieve

src/testsuite/tests/compile/errors/if.sieve

src/testsuite/tests/compile/errors/require.sieve

src/testsuite/testsuite-common.c