Added configuration option variable.
Added configuration option variable.

Added "make depend", to be run when disabling algorithms and "install_sw" to install only software without docs.
oneton/OpenSSL-for-iPhone,ccwangzh/OpenSSL,x2on/OpenSSL-for-iPhone,x2on/OpenSSL-for-iPhone,x2on/OpenSSL-for-iPhone,ccwangzh/OpenSSL,ccwangzh/OpenSSL,ccwangzh/OpenSSL,oneton/OpenSSL-for-iPhone,ccwangzh/OpenSSL,oneton/OpenSSL-for-iPhone,ccwangzh/OpenSSL,x2on/OpenSSL-for-iPhone