Pass -static-libgcc to Windows link commands

This was unnecessary in the past, when -nodefaultlibs was used while
linking, but that changed with
aosp/I722bd6596a1f3f5819f2767c29c0fa1e8b3ec0e8.

Test: simpleperf_ndk64.exe no longer depends on libgcc_s_seh-1.dll.
Change-Id: I435d7302906eb3758e758b5aefca8763bfba6290