Apparently, both load_image() and exec*() support running scripts. We do that

now as well.
Also, both functions will now test if the executable exists and is valid; that
way, load_image()/exec*() can catch many errors without having to create a new
team (or erase the current one - an exec*("my invalid app") might now return
with an error).
The runtime linker now exports a function to test executables that is aware
of the search paths, and will also check user permissions upfront.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@13113 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/libroot/libroot_private.h

@@ -6,9 +6,13 @@
 #define LIBROOT_PRIVATE_H
 
 
+#include <SupportDefs.h>
+
+
 struct uspace_program_args;
 struct real_time_data;
 
+status_t __test_executable(const char *path, char *starter);
 void __init_image(const struct uspace_program_args *args);
 void __init_dlfcn(const struct uspace_program_args *args);
 void __init_env(const struct uspace_program_args *args);