Further cosmetic fixes.

src/configure

src/makefiles/cuda_32bit.mk

src/makefiles/cuda_64bit.mk

src/makefiles/cygwin.mk

src/makefiles/darwin.mk

src/makefiles/linux_atlas.mk

src/makefiles/linux_atlas_arm.mk

src/makefiles/linux_clapack.mk

src/makefiles/linux_clapack_arm.mk

src/makefiles/linux_openblas.mk

src/makefiles/linux_openblas_arm.mk

src/makefiles/linux_x86_64_mkl.mk