add symlink.c, removed in 23cf6a5ad5746 Aug 2011
modify symlink.c to only print the schema names, rename it
cleanup, make it possible to print libexpress option help from external code
add schema with diamond inheritance
add print_attrs test executable for libexpress, add CMakeLists for src/express/test
tests for issue #232: missing asterisk for derived attribute / data lost

schema has multiple inheritance where two attrs with same name are inherited
one is derived, the other isn't
stepcode complains that an asterisk was missing when it encounters the non-derived attr

this bug exposed by AP209 ATS files
create ordered_attrs.*, use in print_attrs

this contains code to print attributes in the proper order for Part 21
Merge pull request #246 from stepcode/review/print_attrs

print_attrs executable / multiple inheritance