Clean up chromiumos-build build files and update .gitignore.

.gitignore

Index: .gitignore
diff --git a/.gitignore b/.gitignore
index 942cafede107d1d9d4106573192aba474ef458eb..90f28f24e0dbe1e741e68a853d4af39c43fdb24b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,5 @@
 #
-# NOTE! Please use 'git-ls-files -i --exclude-standard'
+# NOTE! Please use 'git ls-files -i --exclude-standard'
 # command after changing this file, to see if there are
 # any tracked files which get ignored after the change.
 #
@@ -15,45 +15,44 @@
 *~
 
 # Executables
-
-src/common/unittests
+/src/common/unittests
 
 # User files
-
-src/scripts/shared_user_passwd.txt
+/src/scripts/.chromeos_dev
+/src/scripts/shared_user_passwd.txt
 
 # Ignore DEPS
-src/platform/cros/
-src/platform/login_manager/
-src/platform/pam_google/
-src/third_party/autotest/files/
-src/third_party/chrome/files/
-src/third_party/connman/build/
-src/third_party/connman/connman-0.42/
-src/third_party/e2fsprogs/files/
-src/third_party/fio/files/
-src/third_party/gflags/files/
-src/third_party/google-breakpad/files/
-src/third_party/gpt/
-src/third_party/gtest/files/
-src/third_party/ibus-anthy/files/
-src/third_party/ibus-chewing/files/
-src/third_party/ibus/files/
-src/third_party/kernel/files/
-src/third_party/pam-dev/
-src/third_party/ply-image/src/
-src/third_party/shflags/files/
-src/third_party/shunit2/files/
-src/third_party/syslinux/files/
-src/third_party/tpm-emulator/files/
-src/third_party/wpa_supplicant/build/
-src/third_party/wpa_supplicant/hostap.git/
-src/third_party/xscreensaver/xscreensaver-5.08/
-tools/chromiumos-build/
+/src/platform/cros/
+/src/platform/login_manager/
+/src/platform/pam_google/
+/src/third_party/autotest/files/
+/src/third_party/chrome/files/
+/src/third_party/connman/build/
+/src/third_party/connman/connman-0.42/
+/src/third_party/e2fsprogs/files/
+/src/third_party/fio/files/
+/src/third_party/gflags/files/
+/src/third_party/google-breakpad/files/
+/src/third_party/gpt/
+/src/third_party/gtest/files/
+/src/third_party/gtk+2.0/
+/src/third_party/ibus-anthy/files/
+/src/third_party/ibus-chewing/files/
+/src/third_party/ibus/files/
+/src/third_party/kernel/files/
+/src/third_party/pam-dev/
+/src/third_party/ply-image/src/
+/src/third_party/shflags/files/
+/src/third_party/shunit2/files/
+/src/third_party/syslinux/files/
+/src/third_party/tpm-emulator/files/
+/src/third_party/wpa_supplicant/build/
+/src/third_party/wpa_supplicant/hostap.git/
+/src/third_party/xscreensaver/xscreensaver-5.08/
+/tools/chromiumos-build/
 
 # Top-level directories to ignore
-chroot/
-repo/
-src/build/
-src/platform/dev/static
-
+/chroot/
+/repo/
+/src/build/
+/src/platform/dev/static