- old static non-profiled libraries were removed in the wrong directory
if ${ORIG_SHLIBDIR} != ${LIBDIR}.
- old profiled libraries weren't removed.
- new shared compat libraries were installed in the wrong directory if
${ORIG_SHLIBDIR} != /usr/lib.
- some lines were too long.
Added some comments about cases that have caused problems. Changed
libfoo to ${LIB} so that libresolv/Makefile and libgnumalloc/Makefile
are almost identical.