Fix Bug 524612 - [science overlay] sci-libs/openblas-0.2.11 - Assembler messages: ../kernel/x86_64/gemm_kernel_8x4_barcelona.S:451: Error: missing ')', thanks to Juergen Rose, Jean-Francis Roy and Steven Trogdon for reporting. The problem was that applying the -0.2.11-openblas_config_header_same_between_ABIs.patch patch in src_prepare() causes build failures on assembler code as the assembler does not understand sizeof(float). So delay applying the patch until src_install(). Bump openblas to 0.2.12.