added blas level1 swap  benchmark

e.g.
make HOSTCC=gcc CC=arm-linux-androideabi-gcc NO_LAPACK=1 TARGET=ARMV7

In Android NDK, it uses armeabi-v7a-hard ABI.
TARGET_CFLAGS += -mhard-float -D_NDK_MATH_NO_SOFTFP=1
TARGET_LDFLAGS += -Wl,--no-warn-mismatch -lm_hard
For more information, please check hard-float example at
android_ndk/tests/device/hard-float/jni/.

added blas level1 copy benchmark

Bugfix for armv6 memory barrier

2) If OpenBLAS cannot find Fortran compiler, it will only build BLAS
(without LAPACK).

added optimized cscal and zscal functions for steamroller

added optimized cscal and zscal functions

added optimized dscal kernel

Fix build with ALLOC_SHM=0 (Android NDK)

Refactor such that you can build with ALLOC_SHM=0. HughTLB
implicity depends on ALLOC_SHM=1. This patch allows
building for Android NDK r10d.

Splite the matrix and reduction.

Use only 1 thread in trsm if m or n < 2*GEMM_MULTITHREAD_THRESHOLD

Bugfix for gemm3m tests

updated dgemv_n sgemv_n kernels

Fix detection of ARM architectures in c_check.

This is necessary to avoid the false detection of a cross-compiling environment.

optimizations for sandybridge

added benchmarks for zgeru and cgeru