kfreebsd: Add mremap stub, work around linux/limits.h
mremap() is linux-specific. The workaround to always fail was suggested at https://sourceware.org/legacy-ml/elfutils-devel/2018-q4/msg00170.html
The ETIME constant is copied from Linux.
mremap() is linux-specific. The workaround to always fail was suggested at https://sourceware.org/legacy-ml/elfutils-devel/2018-q4/msg00170.html
The ETIME constant is copied from Linux.