New STIPPLE Compiler Test Files

The following source files are available:

• lexeme_cover.sts
• lexeme_errors1.sts
• Makefile
• parse_defines_cover.sts
• parse_defines_errors1.sts
• parse_expression_cover.sts
• parse_expression_errors1.sts
• parse_program_cover.sts
• parse_program_errors1.sts
• parse_routines_cover.sts
• parse_routines_errors1.sts
• parse_statement_cover.sts
• parse_statement_errors1.sts