MAINT: ship only one copy of BLAS/LAPACK wrappers
BUG: linalg: fix w*dotc/u be functions, not subroutines

F2py will generate the necessary wrappers itself: this way we don't mix
the ABI compatibility layer with the f2py layer.
BLD: fix bento build
BUG: _build_utils: make fortran abi wrappers -ff2c safe

Fix an issue which caused failures if Scipy was compiled with -ff2c
BUG: split g77 ABI vs Accelerate idiosyncratiesV.

While MKL (10.3) on OSX uses the g77 ABI as well, its BLAS interface is
'true' BLAS interface, and not CBLAS. Same for Lapack.

Therefore, we split the wrappers into two sets:

	- the g77 ABI set (any function returning a complex)
	- the rest

MKL only needs wrappers for the first set, Accelerate needs both sets.
BLD: fix blas build failures (ABI wrappers have also lapack symbols)
BLD: fix error in linalg/bscript
Merge branch 'pr/2827' into master.

https://github.com/scipy/scipy/pull/2827