[freebsd91p7][vim] restore vim plugins if it is cleared.
[u104][idfile] 1. new ipaddr_of_internet function. 2. show ip address when logged in.

1. new ipaddr_of_internet for public internet address.
2. show username and logged in ip address.
[freebsd91p7][idfile][vim] 1. show ip address while logged in. 2. new vim key mapping.

c-[ - (ycm)GoToDefinitionElseDeclaration
Merge remote-tracking branch 'origin/u104' into common
Merge remote-tracking branch 'origin/freebsd91p7' into common
[common][vim] Remove <c-[> mapping because it does not work.
[freebsd91p7][bash] Change wording of internet location.
[cygwin][vim] 1. Add profiling ability for slow plugins. 2. Remove tabbar in clean mode.

How to enable vim profiling:
$ VIM_ENABLE_PROFILING=1 vi
Merge remote-tracking branch 'origin/common' into cygwin