Bug#797092: woo: FTBFS on non-x86: inappropriately builds with -march=core2

[Aaron M. Ucko]

Source: woo
Version: 1.0-1
Severity: important

Builds of woo for non-x86 architectures all failed due to trying to
invoke the compiler with the x86-specific flag -march=core2.  This
flag isn't appropriate even on x86, because it limits the portability
of the resulting binaries, so please leave it off altogether.

Thanks!