Backport change from 1.2.0: tests/: Most tests weren't actually running and testcases (looks like a sh portability issue). Fixed, and fortunately all tests still pass. tests/extend.tst: Fix to file .espec files when srcdir != builddir.
git-svn-id: file:///home/survex-svn/survex/branches/1.0@3686 4b37db11-9a0c-4f06-9ece-9ab7cdaee568