Move rustdoc run-make-fulldeps tests to run-make

This cuts the time to run the tests in half, because they don't require
building a stage 2 compiler.

This doesn't change coverage tests, which will be changed soon in a
separate PR.

Author: jyn514

src/test/run-make-fulldeps/exit-code/Makefile renamed to src/test/run-make/exit-code/Makefile

@@ -1,4 +1,4 @@
--include ../tools.mk
+include ../../run-make-fulldeps/tools.mk
 
 all:
 	$(RUSTC) success.rs; [ $$? -eq 0 ]

src/test/run-make-fulldeps/exit-code/compile-error.rs renamed to src/test/run-make/exit-code/compile-error.rs

@@ -1,4 +1,4 @@
--include ../tools.mk
+include ../../run-make-fulldeps/tools.mk
 
 all: foo.rs
 	$(RUSTC) --cfg 'feature="bar"' --crate-type lib foo.rs

src/test/run-make-fulldeps/exit-code/lint-failure.rs renamed to src/test/run-make/exit-code/lint-failure.rs

@@ -1,4 +1,4 @@
--include ../tools.mk
+include ../../run-make-fulldeps/tools.mk
 
 all:
 	$(RUSTC) foo.rs; $(RUSTC) bar.rs