Add a new function, bool rc_getfile(const char *, char **, size_t *)

<snip>
Read the entire @file into the buffer and set @len to the
size of the buffer when finished. For C strings, this will
be strlen(buffer) + 1.
Don't forget to free the buffer afterwards!
</snip>

We also fix bug 374899 by adding this new function.

X-Gentoo-Bug: 374899
X-Gentoo-Bug-URL: http://bugs.gentoo.org/374899

src/librc/rc.map

@@ -14,6 +14,7 @@ global:
 	rc_deptree_update_needed;
 	rc_environ_fd;
 	rc_find_pids;
+	rc_getfile;
 	rc_getline;
 	rc_newer_than;
 	rc_older_than;