Normalize line-endings for all text files
Normalize line-endings for all text files

This change updates the `.gitattributes` file to ensure that all
detected text files have normalized line-endings when committed to the
object repository.

lsm/jscomp,tmikov/jscomp,tmikov/jscomp,tmikov/jscomp,lsm/jscomp,tmikov/jscomp,tmikov/jscomp,tmikov/jscomp,lsm/jscomp,lsm/jscomp,lsm/jscomp,tmikov/jscomp,tmikov/jscomp,tmikov/jscomp,lsm/jscomp,lsm/jscomp