On win32 dll were only properly exported for the double precision
variant because the automatically added cminpack_EXPORTS was the only
one take into account from cminpack.h
now we use CMINPACK_DLL_EXPORTS for all variants to fix the build
Coverage remained the same at 94.105% when pulling dceef97837ac97eef3921bb22abf4a25851c8c76 on xantares:dll into de5849d69fe4dcfd9410b27553c6c811ce5ee710 on devernay:master.
On win32 dll were only properly exported for the double precision variant because the automatically added cminpack_EXPORTS was the only one take into account from cminpack.h now we use CMINPACK_DLL_EXPORTS for all variants to fix the build