Various fixes to allow support for new VS2014 features

 - Added some typeof checks to handle JS errors introduced in Windows 10
 - Added VS2014 to the list of compilers
 - Changed to use stdint.h if we are using VS2014 or higher
 - Skip defining timespec if we're using VS2014 or higher
 - Moved u_char typedef out to always be defined regardless of VS version
Same as above, should be '<'. Additionally we should check whether C11 will be enabled automatically and whether it'll do enable more conditional stuff (which can lead to more conflicts). PHP actually sticks to C89 still, so depending on how far the final 2014 has C11 implemented, we might decide to do it or not.

@dragonmantank please check this and above, i'll have to install vs2014 into some vm, will do that, too.

Thanks.