Changes to sysfiles for better -text and install support.

stone_gui_dialog.sh, stone_gui_text.sh, stone.sh: use type
-p instead of which (the latter does not exist in 2nd stage
small). IMHO, we should prefer type -p to which, because
we depend on bash, which has type -p, and our which is an
alias or a replacement script.

stone_gui_text.sh: instead of "Press ENTER for next page"
on long menus, display a ">>" prompt and read. Valid input
is processed as usual, EOF or invalid input exits to
caller, and ENTER (i.e. an empty line) displays the next
page (as before). The last prompt, ">", remains unchanged.

stone_gui_text.sh: clear the input line when a gui_input
is answered with EOF. Currently there is no way to clear
an input line (can't clear clock_rtc, con_blank, ...)

stone_mod_gas.sh: this is gastone, a simple stone-based
package manager. Supports categories and (un)installing
a single package or an entire category. Requires gzip.

stone_mod_packages.sh: allow mount options (I use --bind)
and support gastone. Don't Display gasgui if it's missing.

stone_mod_setup.sh: while installing, call set_tmarea()
instead of set_tmzone [it's the new entrypoint for setting
time zone] and call set_vcfont [seems logical - all other
i18n-setting stone stuff is called].


git-svn-id: http://www.rocklinux.org/svn/rock-linux/trunk@1364 c5f82cb5-29bc-0310-9cd0-bff59a50e3bc