selinux-h: Avoid using HAVE_* macros in *.in.h files. * m4/selinux-selinux-h.m4 (gl_HEADERS_SELINUX_SELINUX_H): Initialize HAVE_SELINUX_SELINUX_H. * modules/selinux-h (Makefile.am): Substitute HAVE_SELINUX_SELINUX_H. * lib/se-selinux.in.h: Test HAVE_SELINUX_SELINUX_H as an Autoconf variable.