last parameter of cblas_(c,z)dotc_sub and cblas_(c,z)dotu_sub should be void* as well

Change prototypes of complex functions to use void pointers like the other implementations of CBLAS

The user can use char * openblas_get_config() or char * openblas_get_corename().

Signed-off-by: Timothy Gu <timothygu99@gmail.com>

parallelization model is used by OpenBLAS.

Standard headers may contain C++ templates which are not permitted inside an
extern "C" block. This might be the case when we include <complex.h>.

The 'const' modifications were done automatically using this scripts:
https://kaldi.svn.sourceforge.net/svnroot/kaldi/sandbox/dan/tools/for_openblas

Netlib style:
    enum CBLAS_XYZ {X=1, Y=2, Z=3};

Intel MKL style:
    typedef enum {X=1, Y=2, Z=3} CBLAS_XYZ;

With this hybrid style, code written in the latter form won't need any
modifications to be built with OpenBLAS.  This change should not affect existing
code, although a warning may be emitted for C code which does the following
(does not occur with C++):
    typedef enum CBLAS_XYZ CBLAS_XYZ;
    warning: redefinition of typedef 'CBLAS_XYZ' [-pedantic]

openblas_get_config function returns the configure string.
So far, it supports USE64BITINT, NO_CBLAS, NO_LAPACK, NO_LAPACKE,
DYNAMIC_ARCH, NO_AFFINITY.

Example:
 #include <stdio.h>
extern char * openblas_get_config();
void main()
{
  printf("%s\n",openblas_get_config());
  return;
}