lib/thread: move evl_detach_self() out of line

Refrain from inlining core services, so that interposing on them via
dynamic linking tricks is made easier.
Signed-off-by: Philippe Gerum <rpm@xenomai.org>

include/evl/thread.h

@@ -36,10 +36,7 @@ int evl_attach_thread(int flags, const char *fmt, ...);
 
 int evl_detach_thread(int flags);
 
-static inline int evl_detach_self(void)
-{
-	return evl_detach_thread(0);
-}
+int evl_detach_self(void);
 
 int evl_get_self(void);
 

lib/thread.c

@@ -164,6 +164,11 @@ int evl_detach_thread(int flags)
 	return 0;
 }
 
+int evl_detach_self(void)
+{
+	return evl_detach_thread(0);
+}
+
 int evl_get_self(void)
 {
 	return evl_efd;