Evaluate lesspipe output only when LESSOPEN isn't already defined
unless we are on gentoo distribution then export LESSOPEN directly.
Check lesspipe scriptname (lesspipe/lesspipe.sh)
Issue #46#69
* OMB - Major Refactor
- Aliases and completions now works like plugins (need to enabled in .bashrc)
- Removed the compatible check in spectrum.sh, OMB now works with Bash v3.x like the old days.
- Removed core plugin, added those bash functions into base.sh and load during startup.
- Updated OSH template for new installations
- Added history config and few other stuff from #17
@TODO: Added a shell script to update old version of .bashrc to new one.
* Fixed ShellCheck issues
* Fixed ShellCheck issues
