libpthread

Daniel刚刚commit的symver变动中包含了一项最新的改动──将libthr「扶正」为libpthread。这样，FreeBSD从7.0-RELEASE开始，将正式默认采用1:1线程，而不是原先的libkse（M:N线程）作为线程库，类似Solaris。

With help from clement@, I have finally addressed the problem I am encounting was caused by a mix of libkse(libpthread) and its older version.

Daniel Eischen today committed a new patch and this will make KSE default threading library on FreeBSD!