automake: forcibly disable perl ithreads support The SDK when build on a...

automake: forcibly disable perl ithreads support The SDK when build on a machine with perl ithreads enabled will fail to run on many Gentoo systems because perl is usually built without thread capability there. In order to circumvent this issue forcibly disable the ithreads support, tested on CentOS 5.6, Ubuntu 10.04 LTS and Gentoo.

SVN-Revision: 29979