add cmake build options

- add cmake build options as configure provides
  * -DENABLE_ASM (default ON)
  * -DENABLE_EXTRATESTS (default OFF)
  * -DENABLE_NC (default OFF)
  * -DOPENSSLDIR (default ${CMAKE_INSTALL_PREFIX}/etc/ssl)

- add biotest and pidwraptest if ENABLE_EXTRATESTS is ON

- add compiler flag `-fno-common` if CMAKE_SYSTEM_NAME is Darwin
  to prevent link error Undefined symbols "_OPENSSL_ia32cap_P"

crypto/CMakeLists.txt

@@ -742,6 +742,12 @@ else()
 	endif()
 endif()
 
+if(NOT "${OPENSSLDIR}" STREQUAL "")
+	add_definitions(-DOPENSSLDIR=\"${OPENSSLDIR}\")
+else()
+	add_definitions(-DOPENSSLDIR=\"${CMAKE_INSTALL_PREFIX}/etc/ssl\")
+endif()
+
 if (BUILD_SHARED)
 	add_library(crypto-objects OBJECT ${CRYPTO_SRC})
 	add_library(crypto STATIC $<TARGET_OBJECTS:crypto-objects>)