hush: remove disabled CMD_SINGLEWORD_NOGLOB_COND, rename o_glob->perform_glob

+ other small tweaks to comments and such

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
diff --git a/shell/ash.c b/shell/ash.c
index 28a8bb6..273ecab 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -74,7 +74,7 @@
 //applet:IF_FEATURE_SH_IS_ASH(APPLET_ODDNAME(sh, ash, _BB_DIR_BIN, _BB_SUID_DROP, sh))
 //applet:IF_FEATURE_BASH_IS_ASH(APPLET_ODDNAME(bash, ash, _BB_DIR_BIN, _BB_SUID_DROP, bash))
 
-//kbuild:lib-$(CONFIG_ASH)      += ash.o ash_ptr_hack.o shell_common.o
+//kbuild:lib-$(CONFIG_ASH) += ash.o ash_ptr_hack.o shell_common.o
 //kbuild:lib-$(CONFIG_ASH_RANDOM_SUPPORT) += random.o
 
 //config:config ASH