Declare name for all plugins, needed for static builds.

When building a static Finit the plugins do not get a unique name
automatically from the file.  This led to only the first plugin being
loaded, since its name was 'unknown' it was registered as such and all
other plugins conflicted, since 'unknown' was already ... known and
loaded.

This patch gives all plugins a default name, __FILE__, making it
possible to use all of them when building a static Finit.

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>

plugins/initctl.c

@@ -42,6 +42,7 @@
 static void parse(void *arg, int fd, int events);
 
 static plugin_t plugin = {
+	.name = __FILE__,
 	.io = {
 		.cb    = parse,
 		.flags = PLUGIN_IO_READ,