[MAT-432] Remove namespace std from exceptions
[MAT-432] Remove namespace std from expressionbase
[MAT-432] Remove namespace std from numerictypes
[MAT-432] Remove namespace std from testnodes
[MAT-432] Remove namespace std from expression.hh
Merge pull request #114 from OpenGamma/MAT-432

Remove `using namespace std;` from header files
[MAT-355] more lapack templates.
[MAT-355] WIP lapack templating.
[MAT-355] WIP II lapack templating.
[MAT-355] adding bad_alloc protection
[MAT-355] further bad_alloc protection
[MAT-355] xgeev and QR functions added.
[MAT-355] rebase to get s/real16/real8/