hterm: Allow double-click selection to start with '~' or '.'
hterm: Allow double-click selection to start with '~' or '.'

Change-Id: I1c824d44ad314dd9fda1d7764b26024959ae0c5b
Reviewed-on: https://chromium-review.googlesource.com/211870
Reviewed-by: Marvelous Marius <d423f2980be0298efdef7df239b147d21d472f26@chromium.org>
Reviewed-by: Robert Ginda <4419ac4e35d191308e944202d542b192188656d1@chromium.org>
Tested-by: Robert Ginda <4419ac4e35d191308e944202d542b192188656d1@chromium.org>

hernad/libapps,hernad/libapps,hernad/libapps,hernad/libapps