RFR: 8016520: jdk native build does not fail on compilation error on windows

[Erik Joelsson]

When fixing "8011687: Support correct dependencies from header files on 
windows and solaris", the build stopped failing on native compilation 
errors on windows. This was caused by piping the compiler output to 
'tee' which prevented the shell from picking up the exit value of the 
compiler. This patch fixes the problem by saving the exit value to a 
temporary file in the build output dir.

http://cr.openjdk.java.net/~erikj/8016520/webrev.root.01/

/Erik