Merge pull request #9 from bbarker/master

started LAgmatrix tests
Updating: improving libfloats/lamatrix.
Updating: making libfloats/test_Strassen to typecheck.
Updating: starting to implement libfloats/lamatrix.
Updating: improving a bit.
Updating: starting to implement libfloats/lavector
Updating: making test_LAgmat to typecheck.
Updating: minorly improving libfloats/lavector
Updating: libfloats/lamatrix: handling transposition flag
Updating: adding libats/refcount
Updating: modifying ptr_vtake; improving libfloats/lavector.
Updating: improving libfloats/lavector
Updating: improving libfloats/lamatrix.
Merge branch 'master', remote-tracking branch 'upstream/master'