Revision 1818

(TestProjection.test_label)
(TestProjection.test_label_epsg)
(TestProjection.test_epsgcode_for_non_epsg_projection)
(TestProjection.test_epsgcode_for_real_epsg_projection): New tests
for the label and EPSGCode methods
(WriteProjFileTests.doTestWrite, WriteProjFileTests.test_write)
(WriteProjFileTests.test_write_empty_file): Create the ProjFile
objects in the test cases and put the expected contents into the
test case methods too. Update doTestWrite accordingly
(TestLoadingProjFile)
(TestLoadingProjFileWithEmptyProjectionlist): New classes with the
read tests from TestProjFile.
(TestProjFile.doTestRead, TestProjFile.testRead): Removed. These
tests are now in the new classes.
(sample_projfile, sample_projfile_data)
(sample_projfile2, sample_projfile_data2): Removed. Not used
anymore.
(TestProjFile.test_read_unreadable_file): No need to reset the
permissions at the end anymore since we use a unique filename