libusb: make this build with musl.

srcpkgs/libusb/patches/portability-fixes.patch

@@ -0,0 +1,16 @@
+--- libusb/io.c.orig	2014-01-11 16:34:55.811463881 +0100
++++ libusb/io.c	2014-01-11 16:35:26.138281377 +0100
+@@ -34,6 +34,13 @@
+ #include <sys/timerfd.h>
+ #endif
+ 
++#ifndef TIMESPEC_TO_TIMEVAL
++#define TIMESPEC_TO_TIMEVAL(tv, ts) {		\
++	(tv)->tv_sec = (ts)->tv_sec;		\
++	(tv)->tv_usec = (ts)->tv_nsec / 1000;	\
++}
++#endif
++
+ #include "libusbi.h"
+ 
+ /**

srcpkgs/libusb/template

@@ -1,23 +1,22 @@
 # Template file for 'libusb'
 pkgname=libusb
 version=1.0.9
-build_style=gnu-configure
 revision=2
+build_style=gnu-configure
 short_desc="A library which allows userspace access to USB devices"
 maintainer="Juan RP <xtraeme@gmail.com>"
 license="LGPL-2.1"
 homepage="http://libusb.sourceforge.net/"
 distfiles="${SOURCEFORGE_SITE}/$pkgname/$pkgname-$version.tar.bz2"
 checksum=e920eedc2d06b09606611c99ec7304413c6784cba6e33928e78243d323195f9b
-long_desc="
- This package provides a way for applications to access USB devices."
 
 libusb-devel_package() {
-	depends="libusb>=${version}"
+	depends="libusb>=${version}_${revision}"
 	short_desc+=" -- development files"
 	pkg_install() {
 		vmove usr/include
 		vmove "usr/lib/*.a"
+		vmove "usr/lib/*.so"
 		vmove usr/lib/pkgconfig
 	}
 }