#638356 by yched: Reorganize and re-locate field test modules.

modules/field/field.info

...es/field/modules/field_sql_storage/field_sql_storage.test

modules/field/modules/list/list.test

modules/field/modules/options/options.test

modules/field/modules/text/text.test

modules/field/tests/field.test

modules/field/tests/field_test.entity.inc

modules/field/tests/field_test.field.inc

modules/field/tests/field_test.info

modules/field/tests/field_test.install

modules/field/tests/field_test.module

modules/field/tests/field_test.storage.inc

modules/taxonomy/taxonomy.test