Add libpac, pacserver, and ProxyHandler to build.

This allows frameworks to reference libpac, ProxyHandler and pacserver as
required to add PAC support.

bug:10182711
Change-Id: Iffac836a517518bd4b9a473e09372fbd10315539

target/product/base.mk

@@ -57,6 +57,7 @@ PRODUCT_PACKAGES += \
     libmtp \
     libnetlink \
     libnetutils \
+    libpac \
     libreference-ril \
     libreverbwrapper \
     libril \
@@ -86,6 +87,7 @@ PRODUCT_PACKAGES += \
     ndc \
     netcfg \
     netd \
+    pacserver \
     ping \
     ping6 \
     platform.xml \

target/product/core.mk

@@ -34,6 +34,7 @@ PRODUCT_PACKAGES += \
     Home \
     KeyChain \
     PicoTts \
+    ProxyHandler \
     SharedStorageBackup \
     TelephonyProvider \
     UserDictionaryProvider \