Configure: clarify and refine -static.

# no-sse2	disables IA-32 SSE2 code, above option implies no-sse2

# no-<cipher>   build without specified algorithm (rsa, idea, rc5, ...)

# -<xxx> +<xxx> compiler options are passed through

# -static       while -static is also a pass-through compiler option (and

#               as such is limited to environments where it's actually

#               meaningful), it triggers a number configuration options,

#               namely no-dso, no-pic, no-shared and no-threads. It is

#               argued that the only reason to produce statically linked

#               binaries (and in context it means executables linked with

#               -static flag, and not just executables linked with static

#               libcrypto.a) is to eliminate dependency on specific run-time,

#               a.k.a. libc version. The mentioned config options are meant

#               to achieve just that. Unfortunately on Linux it's impossible

#               to eliminate the dependency completely for openssl executable

#               because of getaddrinfo and gethostbyname calls, which can

#               invoke dynamically loadable library facility anyway to meet

#               the lookup requests. For this reason on Linux statically

#               linked openssl executable has rather debugging value than

#               production quality.

#

# DEBUG_SAFESTACK use type-safe stacks to enforce type-safety on stack items

#		provided to stack calls. Generates unique stack functions for

		elsif (/^-static$/)

			{

			$libs.=$_." ";

			$disabled{"dso"} = "forced";

			$disabled{"pic"} = "forced";

			$disabled{"shared"} = "forced";

			$disabled{"threads"} = "forced";