add pfl-whole library support to pass linker flags to keep all parts of the static libpfl.a library
add pfl-whole library support to pass linker flags to keep all parts of the static libpfl.a library

pscedu/pfl,pscedu/pfl,pscedu/slash2-stable,pscedu/pfl,pscedu/slash2-stable,pscedu/slash2-stable,pscedu/slash2-stable,pscedu/pfl,pscedu/slash2-stable,pscedu/slash2-stable,pscedu/slash2-stable