Merge pull request #138 from evoskuil/master

Share VS props files and increment package version.
Expose size_t crypto_shorthash_siphash24_keybytes(void);
Fix mlock()/munlock() return value on Windows
Remove empty lines
Do not try to directly include <avxintrin.h>
glibc requires #pragma GCC target("sse2") to use SSE2 instructions
Get ready to say goodbye to the infamous poly1305-53 implementation.
Give room for optimized implementations instead.
Goodbye poly1305-53 and its genius fp wizardry.
Check for SSE2/SSE3/NEON support at runtime.
autoconf uses HAVE_*, but runtime_have_* sounds really awkward
Use SSE2 or portable scrypt implementation according to what the CPU supports.
Test only for cpu features we actually use for now, add MMX.
Do not forget extern "C" wrappers.
Preserve (e|r)bx register when calling cpuid
cpuid is not going to change more than ebx, even on x86_64
Sync autoconf cpuid detection code
Problem: utils.h not installed

Missing backslash in Makefile.am meant utils.h wasn't installed.
Merge pull request #144 from hintjens/master

Problem: utils.h not installed
Ensure that /dev/urandom is a char device.
Update Win32/Win64 build scripts