Merge pull request #8 from bbarker/master

some gmatcol_foreach functions
Updating: improving libats/gmatrix.
Updating: adding a co-routine example.
Updating: Answering a question on ATS-QA-list.
Updating: improving libats/gmatrix.
Updating: minorly fixing glitches.
Updating: improving libfloats/blas and libats/gmatrix
Updating: fixing libfloats/test_LUPdec
Updating: very minor changes
Updating: adding libfloats/{lavector,lamatrix}.
Updating: making CmakeLists.txt up-to-date.
Started adding some LAg tests.