FS-6973 revert this line

9618ff16 · Brian West · 0085bd68 · 9618ff16
--- a/build/buildopal.sh
+++ b/build/buildopal.sh
@@ -18,7 +18,7 @@ cd `dirname $0`
 cd ..
 FS_DIR=`pwd`

-#export PKG_CONFIG_PATH=$INSTALLDIR/lib/pkgconfig 
+export PKG_CONFIG_PATH=$INSTALLDIR/lib/pkgconfig 


 # Version and patch for PTLib and OPAL. These are almost always in lock