Revert "Don't set GIT_ASKPASS/SSH_ASKPASS= rpostback-askpass for terminal"
Revert "Don't set GIT_ASKPASS/SSH_ASKPASS= rpostback-askpass for terminal"

This reverts commit a6d2e718e7619b5fbffe3a3ff6f49a4d3578ed11.

JanMarvin/rstudio,JanMarvin/rstudio,JanMarvin/rstudio,JanMarvin/rstudio,JanMarvin/rstudio,JanMarvin/rstudio,JanMarvin/rstudio,JanMarvin/rstudio,JanMarvin/rstudio