* lib/am/inst-vars.am: New file, define am__vpath_adj_setup, am__vpath_adj, and am__strip_dir. * lib/am/Makefile.am (dist_am_DATA): Add inst-vars.am. * lib/am/data.am, lib/am/lisp.am, lib/am/python.am, lib/am/scripts.am: Include inst-vars.am, and use $(am__vpath_adj), $(am__vpath_adj_setup), and $(am__strip_dir) in install and uninstall rules. This fixes installation of nobase_ files in VPATH setups with Sun and OSF1/Tru64 Make. * lib/am/libs.am, lib/am/ltlib.am: Include inst-vars.am, and use $(am__strip_dir) to simplify install and uninstall rules. * tests/nobase.test: Augment to check installation from VPATH builds.