Use --whole-archive when linking integration tests on MinGW.
Use --whole-archive when linking integration tests on MinGW.

Prior to this change, the malloc_conf weak symbol provided by the
jemalloc dynamic library is always used, even if the application
provides a malloc_conf symbol.  Use the --whole-archive linker option
to allow the weak symbol to be overridden.

wqfish/jemalloc,jemalloc/jemalloc-cmake,wqfish/jemalloc,wqfish/jemalloc,jemalloc/jemalloc-cmake,jemalloc/jemalloc-cmake,wqfish/jemalloc,wqfish/jemalloc,jemalloc/jemalloc-cmake