Added HAVE_UNALIGNED_BUSERROR detection to configure.ac (Sparc64 / Alpha)

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@4250 43c1dc8c-776e-4df2-8ef1-6e829299be21
Fixed HAVE_UNALIGNED_BUSERROR detection to configure.ac (Sparc64 / Alpha)

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@4251 43c1dc8c-776e-4df2-8ef1-6e829299be21
Added HAVE_UNALIGNED_BUSERROR to sparc temporary fix

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@4252 43c1dc8c-776e-4df2-8ef1-6e829299be21