mass removal of underscores from _BB_DIR_foo and _BB_SUID_foo

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/procps/powertop.c b/procps/powertop.c
index 2f977a0..bfe5a95 100644
--- a/procps/powertop.c
+++ b/procps/powertop.c
@@ -9,7 +9,7 @@
  * Licensed under GPLv2, see file LICENSE in this source tree.
  */
 
-//applet:IF_POWERTOP(APPLET(powertop, _BB_DIR_BIN, _BB_SUID_DROP))
+//applet:IF_POWERTOP(APPLET(powertop, BB_DIR_BIN, BB_SUID_DROP))
 
 //kbuild:lib-$(CONFIG_POWERTOP) += powertop.o