tweak qmake project (avoid problem with parallel build)
tweak qmake project (avoid problem with parallel build)

milkysunshine91/libsquish,mycheckgithub/libsquish,siavee/libsquish,DustinGuoSZ/libsquish,DustinGuoSZ/libsquish,derekbradley/libsquish,robhshu/libsquish,siavee/libsquish,zjhlogo/libsquish,mbechard/libsquish,zjhlogo/libsquish,mantheman/libsquish,mbechard/libsquish,hlhtddx/libsquish,mantheman/libsquish,siavee/libsquish,hlhtddx/libsquish,siavee/libsquish,hlhtddx/libsquish,mbechard/libsquish,milkysunshine91/libsquish,derekbradley/libsquish,robhshu/libsquish,cococo111111/libsquish,derekbradley/libsquish,mantheman/libsquish,mycheckgithub/libsquish,zjhlogo/libsquish,cococo111111/libsquish,cococo111111/libsquish,milkysunshine91/libsquish,mycheckgithub/libsquish,DustinGuoSZ/libsquish,robhshu/libsquish