Rollup merge of #92933 - bjorn3:no_bin_lib_mixing, r=estebank

Deny mixing bin crate type with lib crate types

The produced library would get a main shim too which conflicts with the
main shim of the executable linking the library.

```
$ cat > main1.rs <<EOF
fn main() {}
pub fn bar() {}
EOF
$ cat > main2.rs <<EOF
extern crate main1;
fn main() {
    main1::bar();
}
EOF
$ rustc --crate-type bin --crate-type lib main1.rs
$ rustc -L. main2.rs
error: linking with `cc` failed: exit status: 1
[...]
  = note: /usr/bin/ld: /tmp/crate_bin_lib/libmain1.rlib(main1.main1.707747aa-cgu.0.rcgu.o): in function `main':
          main1.707747aa-cgu.0:(.text.main+0x0): multiple definition of `main'; main2.main2.02a148fe-cgu.0.rcgu.o:main2.02a148fe-cgu.0:(.text.main+0x0): first defined here
          collect2: error: ld returned 1 exit status
```

src/test/run-make-fulldeps/libs-and-bins/Makefile

@@ -1,6 +0,0 @@
--include ../tools.mk
-
-all:
-	$(RUSTC) foo.rs
-	$(call RUN,foo)
-	rm $(TMPDIR)/$(call DYLIB_GLOB,foo)

src/test/run-make-fulldeps/libs-and-bins/foo.rs

@@ -1,4 +0,0 @@
-#![crate_type = "dylib"]
-#![crate_type = "bin"]
-
-fn main() {}

src/test/run-make-fulldeps/output-with-hyphens/Makefile

@@ -1,6 +1,7 @@
 -include ../tools.mk
 
 all:
-	$(RUSTC) foo-bar.rs
+	$(RUSTC) foo-bar.rs --crate-type bin
 	[ -f $(TMPDIR)/$(call BIN,foo-bar) ]
+	$(RUSTC) foo-bar.rs --crate-type lib
 	[ -f $(TMPDIR)/libfoo_bar.rlib ]

src/test/run-make-fulldeps/output-with-hyphens/foo-bar.rs

@@ -1,4 +1 @@
-#![crate_type = "lib"]
-#![crate_type = "bin"]
-
 fn main() {}