[CMake] Don't generate linker script only when shared library isn't statically linked

[phosek]

Summary

Since r337668, we support statically linking dependencies only to shared
or static library. However, that change hasn't updated the check whether
to generate a linker script. We shouldn't generate linker script only in
the case when we aren't statically linked ABI into the shared library.

libcxx/CMakeLists.txt

cmake_dependent_option(LIBCXX_STATICALLY_LINK_ABI_IN_SHARED_LIBRARY
   "LIBCXX_ENABLE_STATIC_ABI_LIBRARY;LIBCXX_ENABLE_STATIC" OFF)
 
 # Generate and install a linker script inplace of libc++.so. The linker script
 # will link libc++ to the correct ABI library. This option is on by default
 # on UNIX platforms other than Apple unless 'LIBCXX_ENABLE_STATIC_ABI_LIBRARY'
 # is on. This option is also disabled when the ABI library is not specified
 # or is specified to be "none".
 set(ENABLE_LINKER_SCRIPT_DEFAULT_VALUE OFF)
-if (LLVM_HAVE_LINK_VERSION_SCRIPT AND NOT LIBCXX_ENABLE_STATIC_ABI_LIBRARY
+if (LLVM_HAVE_LINK_VERSION_SCRIPT AND NOT LIBCXX_STATICALLY_LINK_ABI_IN_SHARED_LIBRARY
       AND NOT LIBCXX_CXX_ABI_LIBNAME STREQUAL "none"
       AND NOT LIBCXX_CXX_ABI_LIBNAME STREQUAL "default"
       AND PYTHONINTERP_FOUND
       AND LIBCXX_ENABLE_SHARED)
     set(ENABLE_LINKER_SCRIPT_DEFAULT_VALUE ON)
 endif()
 
 option(LIBCXX_ENABLE_ABI_LINKER_SCRIPT