Fix for b/4104838 DRM doesn't work on master TOT

Moved final build of widevine DRM plugin into vendor directory for platform
to avoid needing to reference device-specific libs in the Widevine DRM plugin
link.

Also removed some old .sh scripts that are not needed.

Change-Id: Ie6d397c97bc8afd8154f1dddadbab8c7ee524d7a

proprietary/drmwvmplugin/plugin-core.mk

@@ -0,0 +1,25 @@
+#
+#  To be included by platform-specific vendor Android.mk to build
+#  Widevine DRM plugin.  Sets up includes and defines the core libraries
+#  required to build the plugin.
+#
+include $(TOP)/vendor/widevine/proprietary/drmwvmplugin/common.mk
+
+LOCAL_STATIC_LIBRARIES := \
+    libdrmframeworkcommon \
+    libdrmwvmcommon \
+    libwvocs
+
+LOCAL_SHARED_LIBRARIES := \
+    libutils              \
+    libcutils             \
+    libstlport            \
+    libz                  \
+    libwvdrm              \
+    libWVStreamControlAPI
+
+ifeq ($(TARGET_SIMULATOR),true)
+ LOCAL_LDLIBS += -ldl
+else
+ LOCAL_SHARED_LIBRARIES += libdl
+endif