clang bug chrono and thread

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53841

chrono thread bug fix for:

linux error: no matching constructor for initialization of 'duration' 

using the Suggested fix:

- const chrono::nanoseconds __delta = __atime - __c_entry;
- const __clock_t::time_point __s_atime = __s_entry
+ __delta; + const auto __delta = __atime - __c_entry;
+ const auto __s_atime = __s_entry
+ __delta; in file condition_variable 

@ line 110 in /usr/include/c++/4.7

After install something, link them to /usr/local/bin, /usr/local/include, /usr/local/share so that the system path can find them anywhere