Add a port of libcpuid, small x86 CPU identification library written in C.

NB: TIMESTAMP line in distinfo should read as follows, but has to stay in
its current form due to a bug in the hook script:
TIMESTAMP (libcpuid-0.3.0.tar.gz) = 1468115631

WWW: http://libcpuid.sourceforge.net/

sysutils/Makefile

@@ -509,6 +509,7 @@
     SUBDIR += libcdio
     SUBDIR += libcdio-paranoia
     SUBDIR += libchk
+    SUBDIR += libcpuid
     SUBDIR += libfvde
     SUBDIR += libgksu
     SUBDIR += libieee1284

sysutils/libcpuid/Makefile

@@ -0,0 +1,30 @@
+# Created by: Alexey Dokuchaev <danfe@FreeBSD.org>
+# $FreeBSD$
+
+PORTNAME=	libcpuid
+PORTVERSION=	0.3.0
+CATEGORIES=	sysutils
+MASTER_SITES=	SF
+
+MAINTAINER=	danfe@FreeBSD.org
+COMMENT=	Small x86 CPU identification library
+
+LICENSE=	BSD2CLAUSE
+
+ONLY_FOR_ARCHS=	i386 amd64
+
+USES=		libtool pathfix
+GNU_CONFIGURE=	yes
+CONFIGURE_ARGS=	--disable-silent-rules
+USE_LDCONFIG=	yes
+INSTALL_TARGET=	install-strip
+
+PORTDOCS=	AUTHORS ChangeLog Readme.md
+
+OPTIONS_DEFINE=	DOCS
+
+post-install-DOCS-on:
+	@${MKDIR} ${STAGEDIR}${DOCSDIR}
+	${INSTALL_DATA} ${PORTDOCS:S,^,${WRKSRC}/,} ${STAGEDIR}${DOCSDIR}
+
+.include <bsd.port.mk>

sysutils/libcpuid/distinfo

@@ -0,0 +1,3 @@
+TIMESTAMP = 1468115631
+SHA256 (libcpuid-0.3.0.tar.gz) = dcf70a3c163eed34ea146ebee0a3c061a111373f3286391b62cf664402f1e9f8
+SIZE (libcpuid-0.3.0.tar.gz) = 455685

sysutils/libcpuid/files/patch-libcpuid_cpuid__main.c

@@ -0,0 +1,10 @@
+--- libcpuid/cpuid_main.c.orig	2016-08-16 05:32:11 UTC
++++ libcpuid/cpuid_main.c
+@@ -126,6 +126,7 @@ static int get_total_cpus(void)
+ #endif
+ 
+ #if defined __FreeBSD__ || defined __OpenBSD__ || defined __NetBSD__ || defined __bsdi__ || defined __QNX__
++#include <sys/types.h>
+ #include <sys/sysctl.h>
+ 
+ static int get_total_cpus(void)

sysutils/libcpuid/pkg-descr

@@ -0,0 +1,15 @@
+libcpuid is a small C library for x86 CPU detection and feature extraction.
+Using it, you can:
+
+  - Get the processor vendor, model, brand string, code name, etc.
+  - Get information about CPU features such as: number of cores or logical
+    CPUs, cache sizes, CPU clock, etc.
+  - Check if the processor implements a specific instruction set such as
+    SSE2 or 3DNow!
+  - Execute the CPUID and RDTSC instructions in a portable way
+  - And have this all in your commercial application, without getting into
+    trouble, due to permissive license
+
+Reference utility (rather advanced and useful on its own) is also provided.
+
+WWW: http://libcpuid.sourceforge.net/

sysutils/libcpuid/pkg-plist

@@ -0,0 +1,9 @@
+bin/cpuid_tool
+include/libcpuid/libcpuid.h
+include/libcpuid/libcpuid_constants.h
+include/libcpuid/libcpuid_types.h
+lib/libcpuid.a
+lib/libcpuid.so
+lib/libcpuid.so.13
+lib/libcpuid.so.13.0.0
+libdata/pkgconfig/libcpuid.pc