* automake.in (initialize_global_constants): If unreadable by owner, make it readable by owner regardless of number of links. Fixes more of install2.test. * missing: Try to see if gnutar or gtar exist before invoking them. * m4/missing.m4 (AM_MISSING_INSTALL_SH): Remove ${SHELL} from install_sh value. Look for install-sh and install.sh in a somewhat more sensible way. Fixes test install2.test. Partially from Jim Meyering.