Fix broken android build.

Change-Id: I6f27e3ef9bd678f7393c9f573491064978e9c368

jni/Android.mk

diff --git a/jni/Android.mk b/jni/Android.mk
index d628177..7d5afd8 100644
--- a/jni/Android.mk
+++ b/jni/Android.mk
@@ -112,6 +112,7 @@
 LOCAL_CFLAGS += -Wno-psabi
 
 LOCAL_SRC_FILES := $(CERES_SRC_PATH)/array_utils.cc \
+                   $(CERES_SRC_PATH)/blas.cc \
                    $(CERES_SRC_PATH)/block_evaluate_preparer.cc \
                    $(CERES_SRC_PATH)/block_jacobian_writer.cc \
                    $(CERES_SRC_PATH)/block_jacobi_preconditioner.cc \
@@ -138,6 +139,7 @@
                    $(CERES_SRC_PATH)/gradient_checking_cost_function.cc \
                    $(CERES_SRC_PATH)/implicit_schur_complement.cc \
                    $(CERES_SRC_PATH)/iterative_schur_complement_solver.cc \
+                   $(CERES_SRC_PATH)/lapack.cc \
                    $(CERES_SRC_PATH)/levenberg_marquardt_strategy.cc \
                    $(CERES_SRC_PATH)/line_search.cc \
                    $(CERES_SRC_PATH)/line_search_direction.cc \