Add an initial .mailmap
Add an initial .mailmap

This is to fix the output of `git shortlog` and `git check-mailmap`.

I only added names and addresses for developers with a very large
number of commits. It could be improved to add more.

darkrasid/gitlabhq,htve/GitlabForChinese,htve/GitlabForChinese,LUMC/gitlabhq,dreampet/gitlab,openwide-java/gitlabhq,t-zuehlsdorff/gitlabhq,daiyu/gitlab-zh,allysonbarros/gitlabhq,jirutka/gitlabhq,openwide-java/gitlabhq,jirutka/gitlabhq,allysonbarros/gitlabhq,shinexiao/gitlabhq,iiet/iiet-git,darkrasid/gitlabhq,iiet/iiet-git,t-zuehlsdorff/gitlabhq,axilleas/gitlabhq,stoplightio/gitlabhq,axilleas/gitlabhq,iiet/iiet-git,darkrasid/gitlabhq,openwide-java/gitlabhq,axilleas/gitlabhq,screenpages/gitlabhq,icedwater/gitlabhq,dreampet/gitlab,openwide-java/gitlabhq,dreampet/gitlab,iiet/iiet-git,SVArago/gitlabhq,icedwater/gitlabhq,SVArago/gitlabhq,SVArago/gitlabhq,screenpages/gitlabhq,icedwater/gitlabhq,dreampet/gitlab,screenpages/gitlabhq,mr-dxdy/gitlabhq,dplarson/gitlabhq,dplarson/gitlabhq,dplarson/gitlabhq,shinexiao/gitlabhq,darkrasid/gitlabhq,t-zuehlsdorff/gitlabhq,icedwater/gitlabhq,jirutka/gitlabhq,mmkassem/gitlabhq,SVArago/gitlabhq,shinexiao/gitlabhq,allysonbarros/gitlabhq,LUMC/gitlabhq,stoplightio/gitlabhq,mr-dxdy/gitlabhq,stoplightio/gitlabhq,jirutka/gitlabhq,LUMC/gitlabhq,stoplightio/gitlabhq,daiyu/gitlab-zh,mmkassem/gitlabhq,shinexiao/gitlabhq,mmkassem/gitlabhq,mmkassem/gitlabhq,dplarson/gitlabhq,mr-dxdy/gitlabhq,htve/GitlabForChinese,htve/GitlabForChinese,screenpages/gitlabhq,axilleas/gitlabhq,t-zuehlsdorff/gitlabhq,allysonbarros/gitlabhq,daiyu/gitlab-zh,daiyu/gitlab-zh,mr-dxdy/gitlabhq,LUMC/gitlabhq