rtwn: rename module (if_rtwn.ko -> rtwn.ko) to match module name + drop

manpage link.

Reported by:	mav, hselasky

ObsoleteFiles.inc

@@ -38,6 +38,8 @@
 #   xargs -n1 | sort | uniq -d;
 # done
 
+# 20170609: drop obsolete manpage link (if_rtwn.ko -> rtwn.ko)
+OLD_FILES+=usr/share/man/man4/if_rtwn.4.gz
 # 20170531: removal of groff
 OLD_FILES+=usr/bin/addftinfo
 OLD_FILES+=usr/bin/afmtodit

share/man/man4/Makefile

@@ -700,7 +700,6 @@ MLINKS+=pms.4 pmspcv.4
 MLINKS+=ral.4 if_ral.4
 MLINKS+=re.4 if_re.4
 MLINKS+=rl.4 if_rl.4
-MLINKS+=rtwn.4 if_rtwn.4
 MLINKS+=rtwn_pci.4 if_rtwn_pci.4
 MLINKS+=rue.4 if_rue.4
 MLINKS+=scsi.4 CAM.4 \

sys/modules/rtwn/Makefile

@@ -5,7 +5,7 @@
 SYSDIR?=${SRCTOP}/sys
 .include "${SYSDIR}/conf/kern.opts.mk"
 
-KMOD     = if_rtwn
+KMOD     = rtwn
 SRCS     = if_rtwn.c if_rtwn_tx.c if_rtwn_rx.c if_rtwn_beacon.c \
 	   if_rtwn_calib.c if_rtwn_cam.c if_rtwn_task.c if_rtwn_efuse.c \
 	   if_rtwn_fw.c if_rtwn_nop.h if_rtwnreg.h if_rtwnvar.h if_rtwn_tx.h \