Squashed commit of the following:

commit b03d5f537dee393affddf89663ae6977a5512d98
Author: Andreas Huber <andih@google.com>
Date:   Thu Dec 17 14:00:37 2009 -0800

    Update cleanspec to facilitate incremental building with full stagefright lib.

commit b92560a1989f8b9cb27a8772cec5346d3d90dc84
Author: Andreas Huber <andih@google.com>
Date:   Thu Dec 17 13:31:48 2009 -0800

    Enable building stagefright in all builds, make stagefright the default player.
diff --git a/core/main.mk b/core/main.mk
index 0fce663..5e318f5 100644
--- a/core/main.mk
+++ b/core/main.mk
@@ -254,6 +254,11 @@
 else # !sdk
 endif
 
+# build the full stagefright library
+ifneq ($(strip BUILD_WITH_FULL_STAGEFRIGHT),)
+BUILD_WITH_FULL_STAGEFRIGHT := true
+endif
+
 ## precise GC ##
 
 ifneq ($(filter dalvik.gc.type-precise,$(PRODUCT_TAGS)),)
@@ -292,7 +297,6 @@
 # the cause of ANRs in the content process
 ADDITIONAL_BUILD_PROPERTIES += dalvik.vm.stack-trace-file=/data/anr/traces.txt
 
-
 # ------------------------------------------------------------
 # Define a function that, given a list of module tags, returns
 # non-empty if that module should be installed in /system.