Move gsl-config.bat quoting to right place

Author: mohawk2

patches/gsl-2.6/gsl-config.bat.win-gcc

@@ -1,10 +1,10 @@
 @echo off
 rem simplified replacement for the original shell script
-set ROOT=%~dp0
+set ROOT="%~dp0"
 
-set XCFLAGS=-I"%ROOT%..\include"
-set XLIBS1=-L"%ROOT%..\lib" -lgsl -lgslcblas
-set XLIBS2=-L"%ROOT%..\lib" -lgsl
+set XCFLAGS=-I%ROOT%..\include
+set XLIBS1=-L%ROOT%..\lib -lgsl -lgslcblas
+set XLIBS2=-L%ROOT%..\lib -lgsl
 set XVERSION=2.6
 set XPREFIX=%ROOT%..\