Fixed Linux install / package support in CMakeLists. Fixed Linux start script.

package/linux/MultiMC

@@ -1,8 +1,9 @@
 #!/bin/sh
 # Basic start script for running MultiMC with the libs packaged with it.
 
-MMC_DIR = $(dirname "$0")
+MMC_DIR=$(dirname "$0")
 cd "${MMC_DIR}"
 
 export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:"./lib"
+export QT_PLUGIN_PATH=$QT_PLUGIN_PATH:"."
 exec ./bin/MultiMC