make use of the symlink, to ease things (#1608)

Author: tshepang

src/closure.md

@@ -155,7 +155,7 @@ This uses the stage1 compiler and enables `debug!` logging for the
 
 The other option is to step through the code using lldb or gdb.
 
-1. `rust-lldb build/x86_64-apple-darwin/stage1/bin/rustc test.rs`
+1. `rust-lldb build/host/stage1/bin/rustc test.rs`
 2. In lldb:
     1. `b upvar.rs:134`  // Setting the breakpoint on a certain line in the upvar.rs file`
     2. `r`  // Run the program until it hits the breakpoint

src/compiler-debugging.md

@@ -361,9 +361,9 @@ from the directory where it is built (does not have to be "installed"):
         "request": "launch",
         "name": "Launch",
         "args": [],  // array of string command-line arguments to pass to compiler
-        "program": "${workspaceFolder}/build/TARGET/stage1/bin/rustc",
+        "program": "${workspaceFolder}/build/host/stage1/bin/rustc",
         "windows": {  // applicable if using windows
-            "program": "${workspaceFolder}/build/x86_64-pc-windows-msvc/stage1/bin/rustc.exe"
+            "program": "${workspaceFolder}/build/host/stage1/bin/rustc.exe"
         },
         "cwd": "${workspaceFolder}",  // current working directory at program start
         "stopOnEntry": false,