Fix problem building external plugins

The file plugin.h is installed to $prefix/include and used by external
plugins.  Therefore it must not include, or depend on, features set by
the configure script in config.h

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

src/finit.c

@@ -320,7 +320,7 @@ int main(int argc, char* argv[])
 	 * Load plugins early, finit.conf may contain references to
 	 * features implemented by plugins.
 	 */
-	plugin_init(&loop, PLUGIN_PATH);
+	plugin_init(&loop);
 
 	/*
 	 * Hello world.

src/plugin.c

@@ -382,11 +382,11 @@ static int load_plugins(char *path)
 }
 #endif	/* ENABLE_STATIC */
 
-int plugin_init(uev_ctx_t *ctx, char *path)
+int plugin_init(uev_ctx_t *ctx)
 {
 	int fail = 1;
 
-	if (!load_plugins(path))
+	if (!load_plugins(PLUGIN_PATH))
 	    fail = init_plugins(ctx);
 
 	return fail;

src/plugin.h

@@ -24,16 +24,11 @@
 #ifndef FINIT_PLUGIN_H_
 #define FINIT_PLUGIN_H_
 
-#include <config.h>
 #include <uev/uev.h>
 #include <lite/queue.h>		/* BSD sys/queue.h API */
 
 #include "svc.h"
 
-#ifndef PLUGIN_PATH		/* Fallback for --enable-static builds */
-#define PLUGIN_PATH "/dev/null"
-#endif
-
 #define PLUGIN_DEP_MAX  10
 
 /*

src/private.h

@@ -45,7 +45,7 @@ int       plugin_exists    (hook_point_t no);
 void      plugin_run_hook  (hook_point_t no, void *arg);
 void      plugin_run_hooks (hook_point_t no);
 
-int       plugin_init      (uev_ctx_t *ctx, char *path);
+int       plugin_init      (uev_ctx_t *ctx);
 void      plugin_exit      (void);
 
 #endif /* FINIT_PRIVATE_H_ */