fixes issue 756 + preserve fp state around elftc_demangle()
fixes issue 756
+ preserve fp state around elftc_demangle()

SVN-Revision: 1347

bl4ckic3/dynamorio,bl4ckic3/dynamorio,bl4ckic3/dynamorio,sigma-random/dynamorio,daksunt/dynamorio,bl4ckic3/dynamorio,daksunt/dynamorio,code4bones/dynamorio,AmesianX/dynamorio,sigma-random/dynamorio,AmesianX/dynamorio,AmesianX/dynamorio,code4bones/dynamorio,code4bones/dynamorio,AmesianX/dynamorio,code4bones/dynamorio,sigma-random/dynamorio,sigma-random/dynamorio,sigma-random/dynamorio,AmesianX/dynamorio,daksunt/dynamorio,bl4ckic3/dynamorio,daksunt/dynamorio,daksunt/dynamorio,code4bones/dynamorio