Allow LOCAL_LDFLAGS to override HOST_GLOBAL_LDFLAGS.

For host executables and shared libraries, the global LDFLAGS were being
inserted into the linker command line after the module-specific ones,
making it impossible to override the default settings. Change the order
to match target linker invocations.

Change-Id: Icd5f6f83df9f27a5be97ddb197ee245c1ab8c2be