Visual Studio 2013 build files for the FLINT2 library
add some stuff missed in the previous commit
changes needed in tests for Visual Studio 2013
add full test generation and improve build generator
more uodates
add profile build
temporary commit
temporary commit
change DLL build to use declspec annotations rather then a DEF file
more build changes
update Windows build and merge Bill's latest modifications
change sscanf to return zero for an empty input string
Merge branch 'trunk' of github.com:wbhart/flint2 into trunk

Conflicts:
	fmpq.h
	fmpq_poly.h
	fq.h
add a readme.txt file explaining how to build FLINT2 with Visual Studio
Merge branch 'trunk' of github.com:wbhart/flint2 into trunk
More FLINT_DLL definitions
Added fq_poly_scalar_div_fq. (Test code and docs coming.)
Added fmpq_poly_add/sub_series, tests and docs.
Added fmpq_equal_trunc.
added a multithreaded version of compose_mod_brent_kung_vec_preinv
added multithreaded versions of precompute_matrix and compose_mod_brent_kung_precomp_preinv