cleaning up the tests a little.
Merge branch 'master' of github.com:dlwh/breeze

Conflicts:
	src/test/scala/breeze/linalg/LinearAlgebraTest.scala
argmax etc are now all their own independent methods. 

deprecated methods on quasitensor.
implicit not found messages for UFunc Impls
more deprecation warnings
semiring matrix multiply.
version 0.6
0.7-SNAPSHOT
re/im accessors for compatibility with Matlab and Mathematica
Merge branch 'master' of https://github.com/ktakagaki/breeze