• Update to 3.4.9
• Build and install a PIC static library (needed for the upcoming node-sass port) [1]
• Sort variables in Makefile

PR: 222169 [1]
Submitted by: Marcin Cie[38;5;4m~[lak <saper@saper.info>
Changes: https://github.com/sass/libsass/releases/tag/3.4.9