* misc/Makefile (headers): Add ar.h.
* misc/ar.h: New file.
* config.make.in (BUILD_CC): New variable.
* configure.in: Check for BUILD_CC if $host != $build.
* posix/glob.c: Include <alloca.h> only [HAVE_ALLOCA_H], not [sparc].
* Makerules [! objects] (subdir_lib): Depend on the stamp$o files.
(stamp$o files): New targets, create them empty, no deps.
Update from bind-4.9.4-T3B.