This test did not follow our specification for extern classes by failing to
declare a struct type that was typedef'd to have the name "_data_set".  This
was caught by my default initialization alterations. [approved by bradc]



git-svn-id: http://svn.code.sf.net/p/chapel/code/trunk@23774 3a8e244f-b0f2-452b-bcba-4c88e055c3ca
Initial reverse-complement implementations

git-svn-id: http://svn.code.sf.net/p/chapel/code/trunk@23775 3a8e244f-b0f2-452b-bcba-4c88e055c3ca