diff --git a/core/Makefile b/core/Makefile
index 7a4b874..5928a7e 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -581,6 +581,7 @@
 INTERNAL_USERIMAGES_DEPS += $(SELINUX_FC)
 
 # $(1): the path of the output dictionary file
+# $(2): additional "key=value" pairs to append to the dictionary file.
 define generate-userimage-prop-dictionary
 $(if $(INTERNAL_USERIMAGES_EXT_VARIANT),$(hide) echo "fs_type=$(INTERNAL_USERIMAGES_EXT_VARIANT)" >> $(1))
 $(if $(BOARD_SYSTEMIMAGE_PARTITION_SIZE),$(hide) echo "system_size=$(BOARD_SYSTEMIMAGE_PARTITION_SIZE)" >> $(1))
@@ -590,6 +591,7 @@
 $(if $(INTERNAL_USERIMAGES_SPARSE_EXT_FLAG),$(hide) echo "extfs_sparse_flag=$(INTERNAL_USERIMAGES_SPARSE_EXT_FLAG)" >> $(1))
 $(if $(mkyaffs2_extra_flags),$(hide) echo "mkyaffs2_extra_flags=$(mkyaffs2_extra_flags)" >> $(1))
 $(hide) echo "selinux_fc=$(SELINUX_FC)" >> $(1)
+$(if $(2),$(hide) $(foreach kv,$(2),echo "$(kv)" >> $(1);))
 endef
 
 # -----------------------------------------------------------------
@@ -773,7 +775,7 @@
 define build-systemimage-target
   @echo "Target system fs image: $(1)"
   @mkdir -p $(dir $(1)) $(systemimage_intermediates) && rm -rf $(systemimage_intermediates)/system_image_info.txt
-  $(call generate-userimage-prop-dictionary, $(systemimage_intermediates)/system_image_info.txt)
+  $(call generate-userimage-prop-dictionary, $(systemimage_intermediates)/system_image_info.txt, skip_fsck=true)
   $(hide) PATH=$(foreach p,$(INTERNAL_USERIMAGES_BINARY_PATHS),$(p):)$$PATH \
       ./build/tools/releasetools/build_image.py \
       $(TARGET_OUT) $(systemimage_intermediates)/system_image_info.txt $(1)
@@ -930,7 +932,7 @@
   $(call pretty,"Target userdata fs image: $(INSTALLED_USERDATAIMAGE_TARGET)")
   @mkdir -p $(TARGET_OUT_DATA)
   @mkdir -p $(userdataimage_intermediates) && rm -rf $(userdataimage_intermediates)/userdata_image_info.txt
-  $(call generate-userimage-prop-dictionary, $(userdataimage_intermediates)/userdata_image_info.txt)
+  $(call generate-userimage-prop-dictionary, $(userdataimage_intermediates)/userdata_image_info.txt, skip_fsck=true)
   $(hide) PATH=$(foreach p,$(INTERNAL_USERIMAGES_BINARY_PATHS),$(p):)$$PATH \
       ./build/tools/releasetools/build_image.py \
       $(TARGET_OUT_DATA) $(userdataimage_intermediates)/userdata_image_info.txt $(INSTALLED_USERDATAIMAGE_TARGET)
@@ -984,7 +986,7 @@
   $(call pretty,"Target cache fs image: $(INSTALLED_CACHEIMAGE_TARGET)")
   @mkdir -p $(TARGET_OUT_CACHE)
   @mkdir -p $(cacheimage_intermediates) && rm -rf $(cacheimage_intermediates)/cache_image_info.txt
-  $(call generate-userimage-prop-dictionary, $(cacheimage_intermediates)/cache_image_info.txt)
+  $(call generate-userimage-prop-dictionary, $(cacheimage_intermediates)/cache_image_info.txt, skip_fsck=true)
   $(hide) PATH=$(foreach p,$(INTERNAL_USERIMAGES_BINARY_PATHS),$(p):)$$PATH \
       ./build/tools/releasetools/build_image.py \
       $(TARGET_OUT_CACHE) $(cacheimage_intermediates)/cache_image_info.txt $(INSTALLED_CACHEIMAGE_TARGET)
diff --git a/core/build_id.mk b/core/build_id.mk
index 7b06de1..40bb35d 100644
--- a/core/build_id.mk
+++ b/core/build_id.mk
@@ -1,4 +1,3 @@
-
 #
 # Copyright (C) 2008 The Android Open Source Project
 #
@@ -14,9 +13,20 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
+
+#
+# Defines branch-specific values.
+#
+
 # BUILD_ID is usually used to specify the branch name
 # (like "MAIN") or a branch name and a release candidate
-# (like "CRB01").  It must be a single word, and is
+# (like "TC1-RC5").  It must be a single word, and is
 # capitalized by convention.
+#
+BUILD_ID := MASTER
 
-export BUILD_ID=JWQ58
+# DISPLAY_BUILD_NUMBER should only be set for development branches,
+# If set, the BUILD_NUMBER (cl) is appended to the BUILD_ID for
+# a more descriptive BUILD_ID_DISPLAY, otherwise BUILD_ID_DISPLAY
+# is the same as BUILD_ID
+DISPLAY_BUILD_NUMBER := true
diff --git a/core/combo/HOST_linux-x86.mk b/core/combo/HOST_linux-x86.mk
index 4f35ea7..c6a155a 100644
--- a/core/combo/HOST_linux-x86.mk
+++ b/core/combo/HOST_linux-x86.mk
@@ -42,7 +42,8 @@
 HOST_GLOBAL_CFLAGS += -m64
 HOST_GLOBAL_LDFLAGS += -m64
 else
-HOST_GLOBAL_CFLAGS += -m32
+# We expect SSE3 floating point math.
+HOST_GLOBAL_CFLAGS += -mstackrealign -msse3 -mfpmath=sse -m32
 HOST_GLOBAL_LDFLAGS += -m32
 endif # BUILD_HOST_64bit
 
diff --git a/core/definitions.mk b/core/definitions.mk
index 69e7baa..e895f95 100644
--- a/core/definitions.mk
+++ b/core/definitions.mk
@@ -538,7 +538,7 @@
 # $(1): library name
 # $(2): Non-empty if IS_HOST_MODULE
 define _java-lib-full-dep
-$(call _java-lib-dir,$(1),$(2))/javalib$(COMMON_JAVA_PACKAGE_SUFFIX)
+$(call _java-lib-dir,$(1),$(2))/$(if $(2),javalib,classes)$(COMMON_JAVA_PACKAGE_SUFFIX)
 endef
 
 # $(1): library name list
@@ -823,7 +823,7 @@
 endef
 
 define transform-bc-to-so
-@echo "Renderscript compatibility"
+@echo "Renderscript compatibility: $(notdir $@) <= $(notdir $<)"
 $(hide) mkdir -p $(dir $@)
 $(hide) $(BCC_COMPAT) -O3 -o $(dir $@)/$(notdir $(<:.bc=.o)) -fPIC -shared \
 	-rt-path $(PRIVATE_LIBCLCORE) $<
diff --git a/core/java.mk b/core/java.mk
index a7a5dad..22b4e75 100644
--- a/core/java.mk
+++ b/core/java.mk
@@ -280,7 +280,6 @@
 ifneq (,$(strip $(installed_rs_compatibility_jni_libs)))
 $(installed_rs_compatibility_jni_libs) : $(TARGET_OUT_SHARED_LIBRARIES)/lib%.so : \
     $(renderscript_intermediate)/lib%.so
-	@echo "Install RS compatibility library: $@"
 	$(hide) mkdir -p $(dir $@) && cp -f $< $@
 
 # Install them only if the current module is installed.
diff --git a/target/product/sdk.mk b/target/product/sdk.mk
index f7a65db..3226423 100644
--- a/target/product/sdk.mk
+++ b/target/product/sdk.mk
@@ -83,6 +83,7 @@
 PRODUCT_PACKAGE_OVERLAYS := development/sdk_overlay
 
 PRODUCT_COPY_FILES := \
+	device/generic/goldfish/fstab.goldfish:root/fstab.goldfish \
 	device/generic/goldfish/data/etc/apns-conf.xml:system/etc/apns-conf.xml \
 	system/core/rootdir/etc/vold.fstab:system/etc/vold.fstab \
 	frameworks/base/data/sounds/effects/camera_click.ogg:system/media/audio/ui/camera_click.ogg \
diff --git a/tools/releasetools/build_image.py b/tools/releasetools/build_image.py
index 94a9fda..d5bd451 100755
--- a/tools/releasetools/build_image.py
+++ b/tools/releasetools/build_image.py
@@ -77,7 +77,7 @@
   if exit_code != 0:
     return False
 
-  if run_fsck:
+  if run_fsck and prop_dict.get("skip_fsck") != "true":
     # Inflate the sparse image
     unsparse_image = os.path.join(
         os.path.dirname(out_file), "unsparse_" + os.path.basename(out_file))
@@ -113,6 +113,7 @@
       "extfs_sparse_flag",
       "mkyaffs2_extra_flags",
       "selinux_fc",
+      "skip_fsck",
       )
   for p in common_props:
     copy_prop(p, p)