Update compiler workarounds for Clang 6.0

[Staffan Larsen]

I have filed https://bugs.openjdk.java.net/browse/JDK-8048298 to track this. It includes a patch to workaround it.

/Staffan

> On 22 aug 2014, at 12:16, Alexander Scherbatiy <alexandr.scherbatiy at oracle.com> wrote:
> 
> 
> Hi,
> 
> I got the following message during building the JDK 9 on Mac OS X 10.10 Yosemity:
> ------------
> Compiling 32 properties into resource bundles
> /Users/alexsch/openjdk/jdk9-modules/hotspot/make/bsd/makefiles/gcc.make:329: *** "Update compiler workarounds for Clang 6.0".  Stop.
> ------------
> 
> The installed gcc is:
> ---------------------
> > gcc --version
> Configured with: --prefix=/Library/Developer/CommandLineTools/usr --with-gxx-include-dir=/usr/include/c++/4.2.1
> Apple LLVM version 6.0 (clang-600.0.38) (based on LLVM 3.5svn)
> Target: x86_64-apple-darwin14.0.0
> Thread model: posix
> ---------------------
> 
> I also needs to remove the -Werror flag because the compiler gives some warnings that are treated as errors.
> 
> Thanks,
> Alexandr.
>