Key 'b' in the browse window spawns a shell in the current directoy.
We first check the $SHELL environment variable of the user for the preferred
shell interpreter. If it's not set, we fall back to the compile time
configured default shell (usually /bin/bash).
Signed-off-by: Thomas Jarosch <thomas.jarosch@intra2net.com>
Ncurses provides a pkg-config module which could be used here. If not
available we fall back to the old detection heuristic.
Signed-off-by: Justin Lecher <jlec@gentoo.org>
