[ping][gomp4] splay tree implementation for future OpenACC runtime library usage.

Hi! Ping * 2 http://gcc.gnu.org/ml/gcc-patches/2013-12/msg00527.html Thanks!

[ping][gomp4] splay tree implementation for future OpenACC runtime library usage.

Hi! Ping! http://gcc.gnu.org/ml/gcc-patches/2013-12/msg00527.html

[gomp4] splay tree implementation for future OpenACC runtime library usage.

Hi! Here is a patch that changes the splay tree implementation. Specifically, generalizes the implementation so that it can be used by other functions outside of its use by the functions within target.c. Would appreciate review of the changes. Thanks! Generalize splay tree