[ArchLinux] Update CFLAGS to use new -fstack-protector-strong switch
[Bash] Update creating alerts through console

* New function timer() which takes time and message and displays it using zenity
after sleeping for time seconds
* Update InstallScript to reflect dependant packages
[Bash] Split aliases specific to Wget devel
[Bash] Remove colorgcc and use ccache

We don't use colorgcc anymore. New versions of gcc will come with colour support
inbuilt.

Use ccache when outside makepkg too, by exporting path.
Export PATH for coverity analysis tools
[Bash] Double quote some values to prevent splitting and globbing