Break up the rest of stubs.cpp.

Bug: http://b/27999086
Change-Id: Ibcc2c5171d43ebd26b486642052738473f3b7714
diff --git a/libc/Android.mk b/libc/Android.mk
index 49a8bdb..631de5e 100644
--- a/libc/Android.mk
+++ b/libc/Android.mk
@@ -111,6 +111,7 @@
     bionic/getcwd.cpp \
     bionic/getdomainname.cpp \
     bionic/gethostname.cpp \
+    bionic/getpagesize.cpp \
     bionic/getpgrp.cpp \
     bionic/getpid.cpp \
     bionic/gettid.cpp \
@@ -140,6 +141,7 @@
     bionic/mknod.cpp \
     bionic/mntent.cpp \
     bionic/mremap.cpp \
+    bionic/netdb.cpp \
     bionic/NetdClientDispatch.cpp \
     bionic/net_if.cpp \
     bionic/netinet_in.cpp \
@@ -198,7 +200,6 @@
     bionic/strerror_r.cpp \
     bionic/strsignal.cpp \
     bionic/strtold.cpp \
-    bionic/stubs.cpp \
     bionic/symlink.cpp \
     bionic/sync_file_range.cpp \
     bionic/sysinfo.cpp \