libcompat: Correct rtld MLINKS

Don't install duplicate ld-elf.so.1.1 and ld.so.1 links in rtld-elf32.
Do install lib-elf32.so.1.1 and ldd32.1 links.

Reported by:	madpilot

libexec/rtld-elf/Makefile

@@ -49,7 +49,7 @@ INSTALLFLAGS=	-C -b
 PRECIOUSPROG=
 BINDIR=		/libexec
 SYMLINKS=	../..${BINDIR}/${PROG} ${LIBEXECDIR}/${PROG}
-MLINKS=		rtld.1 ld-elf.so.1.1 \
+MLINKS?=	rtld.1 ld-elf.so.1.1 \
 		rtld.1 ld.so.1
 
 .if ${MACHINE_CPUARCH} == "sparc64"

libexec/rtld-elf32/Makefile

@@ -5,6 +5,7 @@ NEED_COMPAT=	32
 
 PROG=	ld-elf32.so.1
 MAN=
+MLINKS=	rtld.1 ld-elf32.so.1
 
 .PATH:  ${SRCTOP}/libexec/rtld-elf
 .include "${SRCTOP}/libexec/rtld-elf/Makefile"

usr.bin/ldd32/Makefile

@@ -5,6 +5,7 @@ NEED_COMPAT=	32
 
 PROG=	ldd32
 MAN=
+MLINKS=	ldd.1 ldd32.1
 
 .PATH:	${SRCTOP}/usr.bin/ldd
 .include "${SRCTOP}/usr.bin/ldd/Makefile"