numactl: fix musl build with a patch by yours truly.

srcpkgs/numactl/patches/musl.patch

@@ -0,0 +1,23 @@
+__GLIBC_PREREQ is only defined with glibc, so that only process it with __GLIBC__.
+
+--- syscall.c.orig	2014-10-20 16:12:53.000000000 +0200
++++ syscall.c	2015-06-22 08:13:22.729034702 +0200
+@@ -115,14 +115,16 @@
+ 
+ #endif
+ 
+-#if defined(__GLIBC__) && __GLIBC_PREREQ(2, 11)
++#if defined(__GLIBC__)
++# if __GLIBC_PREREQ(2,11)
+ 
+ /* glibc 2.11 seems to have working 6 argument sycall. Use the
+    glibc supplied syscall in this case.
+    The version cut-off is rather arbitary and could be probably
+    earlier. */
+ 
+-#define syscall6 syscall
++#  define syscall6 syscall
++#endif
+ #elif defined(__x86_64__)
+ /* 6 argument calls on x86-64 are often buggy in both glibc and
+    asm/unistd.h. Add a working version here. */

srcpkgs/numactl/template

@@ -1,7 +1,7 @@
 # Template file for 'numactl'
 pkgname=numactl
 version=2.0.10
-revision=3
+revision=4
 build_style=gnu-configure
 hostmakedepends="automake libtool"
 short_desc="Simple NUMA policy support"
@@ -10,7 +10,7 @@ license="LGPL-2.1"
 homepage="http://oss.sgi.com/projects/libnuma/"
 distfiles="ftp://oss.sgi.com/www/projects/libnuma/download/${pkgname}-${version}.tar.gz"
 checksum=dbdac8fe74f13b2e2864bba352f1597ab1d3345c8c485d7805f58d66f414db61
-only_for_archs="i686 x86_64"
+only_for_archs="i686 i686-musl x86_64 x86_64-musl"
 
 pre_configure() {
 	NOCONFIGURE=1 ./autogen.sh