RFR: JDK-8068902: Solaris build fails with new 10u10 devkit

[Erik Joelsson]

Hello,

Please review this small patch, which moves the SYSROOT_CFLAGS and 
SYSROOT_LDFLAGS to the back of the compiler and linker command lines. On 
linux, this shouldn't matter as we don't need to override the --sysroot 
option. On Solaris, such an option does not exist, but instead we set an 
explicit -I flag pointing to the system include directory. This -I flag 
must be added after all other -I flags on the command line, as 
otherwise, system headers would override application headers, instead of 
the other way around. The same goes for -L flags when linking.

Bug: https://bugs.openjdk.java.net/browse/JDK-8068902
Webrev: http://cr.openjdk.java.net/~erikj/8068902/webrev.root.01/

/Erik