Rename to libusb-1.0

I've taken over the libusb project, and what was previously known as fpusb
will eventually be released as libusb-1.0.
diff --git a/libusb-1.0.pc.in b/libusb-1.0.pc.in
new file mode 100644
index 0000000..dd6bde0
--- /dev/null
+++ b/libusb-1.0.pc.in
@@ -0,0 +1,11 @@
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+libdir=@libdir@
+includedir=@includedir@
+
+Name: libusb-1.0
+Description: C API for USB device access from Linux userspace
+Version: @VERSION@
+Libs: -L${libdir} -lusb-1.0
+Cflags: -I${includedir}/libusb-1.0
+