Refactoring MemoryHandler broke "buck build buck"

Created by: bocon13

@michsien, It appears that refactoring MemoryHandler into log/memory has broken Buck's self build.

Here is the commit: ff6b1371

|=> //test/com/facebook/buck/util/environment:testutil... 0.6s (running javac[0.5s]) /Users/bocon/onlab/buck/src/com/facebook/buck/log/memory/MemoryHandler.java:19: error: cannot find symbol import com.facebook.buck.log.LogFormatter; ^ symbol: class LogFormatter location: package com.facebook.buck.log /Users/bocon/onlab/buck/src/com/facebook/buck/log/memory/MemoryHandler.java:44: error: cannot find symbol private static final Formatter DEFAULT_FORMATTER = new LogFormatter(); ^ symbol: class LogFormatter location: class com.facebook.buck.log.memory.MemoryHandler Errors: 2. Warnings: 0.

/Users/bocon/onlab/buck/src/com/facebook/buck/maven/Signer.java:3: error: package com.facebook.buck.util.exportedfiles does not exist import static com.facebook.buck.util.exportedfiles.Preconditions.checkNotNull; ^ /Users/bocon/onlab/buck/src/com/facebook/buck/maven/Signer.java:3: error: static import only from classes and interfaces import static com.facebook.buck.util.exportedfiles.Preconditions.checkNotNull; ^ /Users/bocon/onlab/buck/src/com/facebook/buck/maven/Signer.java:21: error: cannot find symbol this.input = checkNotNull(input); ^ symbol: method checkNotNull(java.io.File) location: class com.facebook.buck.maven.Signer Errors: 3. Warnings: 0.

src/com/facebook/buck/log/memory/BUCK (:memory) is missing deps: '//src/com/facebook/buck/log:log',