mk/prog.mk: set MAN to $(BIN).8 by default.

bin/xbps-create/Makefile

@@ -2,6 +2,5 @@ TOPDIR = ../..
 -include $(TOPDIR)/config.mk
 
 BIN = xbps-create
-MAN = $(BIN).8
 
 include $(TOPDIR)/mk/prog.mk

bin/xbps-dgraph/Makefile

@@ -2,5 +2,6 @@ TOPDIR = ../..
 -include $(TOPDIR)/config.mk
 
 BIN = xbps-dgraph
+MAN =
 
 include $(TOPDIR)/mk/prog.mk

bin/xbps-install/Makefile

@@ -3,6 +3,5 @@ TOPDIR = ../..
 
 BIN = xbps-install
 OBJS =  main.o transaction.o main.o question.o fetch_cb.o state_cb.o util.o
-MAN = $(BIN).8
 
 include $(TOPDIR)/mk/prog.mk

bin/xbps-pkgdb/Makefile

@@ -7,6 +7,4 @@ OBJS +=	check_pkg_rundeps.o
 OBJS +=	check_pkg_symlinks.o check_pkg_unneeded.o
 OBJS +=	convert.o
 
-MAN = $(BIN).8
-
 include $(TOPDIR)/mk/prog.mk

bin/xbps-query/Makefile

@@ -4,6 +4,5 @@ TOPDIR = ../..
 BIN = xbps-query
 OBJS =  main.o list.o show-deps.o show-info-files.o
 OBJS += ownedby.o search.o ../xbps-install/util.o
-MAN = $(BIN).8
 
 include $(TOPDIR)/mk/prog.mk

bin/xbps-reconfigure/Makefile

@@ -2,6 +2,5 @@ TOPDIR = ../..
 -include $(TOPDIR)/config.mk
 
 BIN =	xbps-reconfigure
-MAN =	$(BIN).8
 
 include $(TOPDIR)/mk/prog.mk

bin/xbps-remove/Makefile

@@ -6,6 +6,5 @@ OBJS =	main.o
 OBJS += ../xbps-install/question.o
 OBJS += ../xbps-install/util.o
 OBJS += ../xbps-install/transaction.o
-MAN = $(BIN).8
 
 include $(TOPDIR)/mk/prog.mk

bin/xbps-rindex/Makefile

@@ -3,6 +3,5 @@ TOPDIR = ../..
 
 BIN =	xbps-rindex
 OBJS =	main.o index-add.o index-clean.o remove-obsoletes.o repoflush.o
-MAN = $(BIN).8
 
 include $(TOPDIR)/mk/prog.mk

bin/xbps-uhelper/Makefile

@@ -3,5 +3,6 @@ TOPDIR = ../..
 
 BIN = xbps-uhelper
 OBJS = main.o ../xbps-install/fetch_cb.o
+MAN =
 
 include $(TOPDIR)/mk/prog.mk

mk/prog.mk

@@ -3,6 +3,7 @@
 OBJS	?= main.o
 
 BINS = $(BIN)
+MAN ?= $(BIN).8
 
 ifdef BUILD_STATIC
 BINS += $(BIN).static