ART: Make run-tests more verbose

Make run-tests log ERROR level on host. Adjust some internal LOG(ERROR)
to LOG(WARNING). Add check scripts to adjust for other LOG(ERROR)
messages.

Bug: 18713034
Change-Id: I2a3e055baa6a0e31f106364c300c20963a59ed94
diff --git a/test/etc/run-test-jar b/test/etc/run-test-jar
index 04eea4e..0c49674 100755
--- a/test/etc/run-test-jar
+++ b/test/etc/run-test-jar
@@ -370,7 +370,7 @@
     if [ "$DEV_MODE" = "y" ]; then
         export ANDROID_LOG_TAGS='*:d'
     else
-        export ANDROID_LOG_TAGS='*:s'
+        export ANDROID_LOG_TAGS='*:e'
     fi
     export ANDROID_DATA="$DEX_LOCATION"
     export ANDROID_ROOT="${ANDROID_ROOT}"