pre-commit auto whitespace clean up for `map` files (#415)

Enforced three hooks for `map` files:

- end-of-file-fixer
- mixed-line-ending
- trailing-whitespace

Add a linker map file for salhelper on Win64.

Patch by: me



git-svn-id: https://svn.apache.org/repos/asf/openoffice/trunk@1826066 13f79535-47bb-0310-9956-ffa450edef68