Fix unintentional fall-through cases in get_cacheinfo

These appear to be unintended side effects of PR #1091, probably causing #1232

arm: Fix clang compilation for ARMv7

arm: add support for softfp in arm vfp assembly files

Add sched_getcpu implementation for pre-2.6 glibc

* Do not add -lpthread on Android builds

* Do not add -lpthread on Android cmake builds

Fixes #1210, compilation on RHEL5 with affinity enabled

fixed syrk_thread.c taken from wernsaar

clang is not recognizing some pre-UAL VFP mnemonics like fnmacs, fnmacd,
fnmuls and fnmuld. Replaced them with equivalent UAL mnemonics which are
vmls.f32, vmls.f64, vnmul.f32 and vnmul.f64 respectively.

Stride calculation fix copied from https://github.com/wernsaar/OpenBLAS/commit/88900e1

The optimized LAPACK functions from interface use OS-dependent suffixes .o/.obj for the object files, while netlib LAPACK uses .o throughout. ReLAPACK object names have to match in order for function replacement in the growing library file to work.

Optimise loads on Power9 LE

Add Microsoft Windows 10 UWP build support

Since softfp code has been added to all required vfp kernels,
the code for auto detection of abi is no longer required.

The option to force softfp ABI on make command line by giving
ARM_SOFTFP_ABI=1 is retained. But there is no need to give this option
anymore.

Also the newly added C versions of 4x4/4x2 gemm/trmm kernels are removed.
These are longer required. Moreover these kernels has bugs.

arm64: Change mtune/mcpu options for THUNDERX2T99 target

In case of softfp abi, assembly implementations of only those APIs are
used which doesnt have a floating point argument or return value.

In case of hard abi, all assembly implementations are used.

Added generic 4x4 and 4x2 gemm kernels
Added generic 4x2 trmm kernel

If ARM abi is not explicitly mentioned on the command line, then set the
arm abi to softfp or hard according to the compiler environment.
This assumes that compiler sets the defines __ARM_PCS and __ARM_PCS_VFP
accordingly.

Add 64bit support for Microsoft Visual Studio

Use lxvd2x instruction instead of lxvw4x.
lxvd2x performs far better on the new POWER architecture than lxvw4x.