Updated a warning + removed .elf from intermediate bootdesc elf file

container packer picks up files with .elf extentions. Therefore intermediate
files must not have .elf extentions, since they're not meant to go to the final
executable.
	modified:   conts/posix/bootdesc/SConscript
	modified:   conts/posix/libposix/stat.c

conts/posix/bootdesc/SConscript

@@ -11,6 +11,7 @@ from os.path import *
 Import('config', 'environment', 'images')
 
 e = environment.Clone()
+e.Replace(PROGSUFFIX = '')
 e.Append(LINKFLAGS = ['-T' + e['bootdesc_dir'] + '/linker.lds'])
 #e.Append(LINKFLAGS = ['-T' + '/linker.lds'])
 

conts/posix/libposix/stat.c

@@ -57,6 +57,8 @@ int kstat_to_stat(struct kstat *ks, struct stat *s)
 	s->st_atime = ks->atime;
 	s->st_mtime = ks->mtime;
 	s->st_ctime = ks->ctime;
+
+	return 0;
 }
 
 static inline int l4_stat(const char *pathname, void *buffer)