- disable GCC builtins
- Add simple tests for strlen, showing that a NULL pointer will cause an access violation, which is broken in our asm implementation
svn path=/trunk/; revision=70427
disable some tests on x64, since they don't build. Disable some exports from dllexport_test on non-x86 build, since decorations are x86 specific.
svn path=/trunk/; revision=63453