add realpath realization if missed

TODO

 /etc/eepm.conf конфиг
 
-FIXME: epm-install need realpath, missed on some systems
-
 [18:21:12] <danil> Вот так можно:
 RED='\033[0;31m' ; NC='\033[0m' b="b" ; echo -e "aba" | sed -e "s|${b}|\\${RED}${b}\\${NC}|g" | xargs -0 printf
 [18:23:40] <danil> > Ты знаешь способы?

bin/epm-sh-functions

@@ -154,6 +154,14 @@ sudocmd_foreach()
 	done
 }
 
+# add realpath if missed
+if ! which realpath 2>/dev/null >/dev/null ; then
+realpath()
+{
+	readlink -f "$@"
+}
+fi
+
 get_firstarg()
 {
 	echon "$1"