closure-compiler failed to build on 10.7

gistfile1.txt

```
$ ls -l ~/Library/Logs/Homebrew/closure*
ls: /Users/mithrandir/Library/Logs/Homebrew/closure*: No such file or directory

$ brew doctor
Warning: Your XQuartz (2.7.1) is outdated
Please install XQuartz 2.7.4.
Warning: You have leftover files from an older version of Xcode.
You should delete them using:
  /Developer/Library/uninstall-developer-folder
Warning: Unbrewed .pc files were found in /usr/local/lib/pkgconfig.
If you didn't put them there on purpose they could cause problems when
building Homebrew formulae, and may need to be deleted.

Unexpected .pc files:
    /usr/local/lib/pkgconfig/fuse.pc
Warning: Unbrewed static libraries were found in /usr/local/lib.
If you didn't put them there on purpose they could cause problems when
building Homebrew formulae, and may need to be deleted.

Unexpected static libraries:
    /usr/local/lib/libhelium_mac.a
Warning: /usr/bin occurs before /usr/local/bin
This means that system-provided programs will be used instead of those
provided by Homebrew. The following tools exist at both paths:

    apr-1-config
    apu-1-config
    clang
    clang++
    git
    git-cvsserver
    git-receive-pack
    git-shell
    git-upload-archive
    git-upload-pack
    gitk
    svn
    svnadmin
    svndumpfilter
    svnlook
    svnserve
    svnsync
    svnversion

Consider amending your PATH so that /usr/local/bin
occurs before /usr/bin in your PATH.
```