Merge "android.test.{base|mock} are added as optional libraries."
diff --git a/build_test.bash b/build_test.bash
index 4c43224..ee979e7 100755
--- a/build_test.bash
+++ b/build_test.bash
@@ -27,6 +27,10 @@
 # that's detected in the Go code, which skips calculating the startup time.
 export TRACE_BEGIN_SOONG=$(date +%s%N)
 
+# Remove BUILD_NUMBER so that incremental builds on build servers don't
+# re-read makefiles every time.
+unset BUILD_NUMBER
+
 export TOP=$(cd $(dirname ${BASH_SOURCE[0]})/../..; PWD= /bin/pwd)
 cd "${TOP}"
 source "${TOP}/build/soong/scripts/microfactory.bash"
diff --git a/ui/build/paths/config.go b/ui/build/paths/config.go
index 6851e8c..7e19da6 100644
--- a/ui/build/paths/config.go
+++ b/ui/build/paths/config.go
@@ -41,8 +41,8 @@
 
 var Log = PathConfig{
 	Symlink: true,
-	Log: true,
-	Error: false,
+	Log:     true,
+	Error:   false,
 }
 
 // The configuration used if the tool is not listed in the config below.
@@ -110,7 +110,6 @@
 	"openssl":   Allowed,
 	"paste":     Allowed,
 	"patch":     Allowed,
-	"perl":      Log,
 	"pgrep":     Allowed,
 	"pkill":     Allowed,
 	"ps":        Allowed,