Fix the CMake's syntax error and the errors while compiling OpenSSL with MSVC 2013.
messages:
.\crypto\ec\ec_asn1.c(260) : error C2370: 'ECPKPARAMETERS_it' :
redefinition; di
fferent storage class
         .\crypto\ec\ec_asn1.c(258) : see declaration of 'ECPKPARAMETERS_it'
.\crypto\ec\ec_asn1.c(261) : error C2370: 'ECPKPARAMETERS_it' :
redefinition; di
fferent storage class
         .\crypto\ec\ec_asn1.c(258) : see declaration of 'ECPKPARAMETERS_it'
.\crypto\ec\ec_asn1.c(271) : error C2370: 'EC_PRIVATEKEY_it' :
redefinition; dif
ferent storage class
         .\crypto\ec\ec_asn1.c(269) : see declaration of 'EC_PRIVATEKEY_it'
.\crypto\ec\ec_asn1.c(272) : error C2370: 'EC_PRIVATEKEY_it' :
redefinition; dif
ferent storage class
         .\crypto\ec\ec_asn1.c(269) : see declaration of 'EC_PRIVATEKEY_it'

Signed-off-by: cylien <cylien.dicom@gmail.com>