#issue77-WrongMapperError:Add mapper tests.
updated mappers after tests of hdf files (MapperModisL1Test and MapperAsterL1aTest) failed. The reason was that I don't have the necessary libraries installed, and the error message is now 'GDALError: NANSAT can not open the file ...' which should be correct.
Merge branch 'issue77-WrongMapperError' into develop