Use -force_load, rather than -all_load, on ld64 (macOS)

We have been using ld64's `-all_load` as the mac equivalent to
`--whole-archive`, but `-force_load` does something closer to what we want.
From the ld64 man page:
```
-all_load
        Loads all members of static archive libraries.
-force_load path_to_archive
        Loads all members of the specified static archive library.  Note:
        -all_load forces all members of all archives to be loaded.  This
        option allows you to target a specific archive.
```

When we link `libjulia-internal.dylib` and `libjulia-codegen.dylib` with
`-all_load`, we pull in more of the static LLVM support libraries than we need.

Before:
```
5.1M	usr/lib/libjulia-internal.1.14.0.dylib
2.1M	usr/lib/libjulia-codegen.1.14.0.dylib
```

After:
```
3.8M	usr/lib/libjulia-internal.1.14.0.dylib
2.1M	usr/lib/libjulia-codegen.1.14.0.dylib
```

Author: xal-0

Make.inc

@@ -1508,7 +1508,7 @@ RPATH_LIB := $(RPATH_ORIGIN)
 
 # --whole-archive
 ifeq ($(OS), Darwin)
-  WHOLE_ARCHIVE := -Xlinker -all_load
+  WHOLE_ARCHIVE := -Xlinker -force_load
   NO_WHOLE_ARCHIVE :=
 else
   WHOLE_ARCHIVE := -Wl,--whole-archive
@@ -1578,8 +1578,6 @@ endif
 ifeq ($(OS), Darwin)
 SHLIB_EXT := dylib
 OSLIBS += -framework CoreFoundation
-WHOLE_ARCHIVE := -Xlinker -all_load
-NO_WHOLE_ARCHIVE :=
 HAVE_SSP := 1
 JLIBLDFLAGS += -Wl,-compatibility_version,$(SOMAJOR) -Wl,-current_version,$(JULIA_MAJOR_VERSION).$(JULIA_MINOR_VERSION).$(JULIA_PATCH_VERSION)
 endif

base/linking.jl

@@ -107,7 +107,7 @@ function ld()
 end
 
 const WHOLE_ARCHIVE = if Sys.isapple()
-    "-all_load"
+    "-force_load"
 else
     "--whole-archive"
 end