Armadillo 0.6.11

Armadillo is a C++ linear algebra library (matrix and vector maths) aiming towards a good balance between efficiency and ease of use, while staying lean and being distributed under a license that is useful in both commercial and open-source contexts.
This library is useful if you decide to develop a C++ application, due to speed and/or integration capabilities.
Armadillo uses a delayed evaluation approach in order to combine several operations into one and reduce (or eliminate) the need for temporaries. This is accomplished through extensive use of recursive templates.

Enhancements
- more elaborate Mat class destructor for better debugging of user code
- bugfix for solve() when using complex numbers
- bugfix for documentation of sort() and sort_index()
- modified installation to check for version of Boost libraries
- cleaned up rpm spec file