- suppress error messages that appear with zsh.
According to unset(1p), 'unset -f' unsets a function.
If the function was not previously defined, this is a no-op.
This is similar for zsh, but there it emits a warning if the
function was not previously defined.
- avoid 'local' in functions sources from etc/bashrc.
ksh does not support this.
- use 'command' shell builtin instead of 'type'.
Seems to be more consistent between shell flavours.
- as per bashrc,cshrc delimit with
"# USER EDITABLE PART"
"# END OF (NORMAL) USER EDITABLE PART"
this can help simplify any patching for system-building scripts etc.
- support gperftools-none, gperftools-system configurations
as per other third-party packages.
STYLE: clean up more environment variables
CONFIG: testing adios rule
etc/config.sh and etc/config.csh
This structure is more convenient to add support for other shells, e.g. zsh, fish etc.
Resolves feature request to simplify support for other shells in
http://www.openfoam.org/mantisbt/view.php?id=1232
