Honour DEBUG, provide DEBUG_PACKAGES and remove obsolete libtermkey fix

libtermkey no longer dumps core without TERM being set since the recent
update to 0.22.

editors/vis/Makefile

@@ -1,4 +1,4 @@
-# $OpenBSD: Makefile,v 1.6 2020/06/10 10:53:16 kn Exp $
+# $OpenBSD: Makefile,v 1.7 2020/06/11 16:56:34 kn Exp $
 
 COMMENT =		vi-like editor with sam-style structural regex support
 
@@ -36,13 +36,12 @@ RUN_DEPENDS =		devel/lpeg,${MODLUA_FLAVOR}>=0.12
 
 TEST_DEPENDS =		editors/vim
 
-# libtermkey dumps core when TERM is unset
-TEST_ENV =		TERM=${TERM}
-
 CONFIGURE_STYLE =	simple
 CONFIGURE_ARGS =	--prefix=${PREFIX} \
 			--mandir=${PREFIX}/man
 
+DEBUG_PACKAGES =	${BUILD_PACKAGES}
+
 # for test/core/Makefile
 USE_GMAKE =		Yes
 

editors/vis/patches/patch-configure

@@ -0,0 +1,15 @@
+$OpenBSD: patch-configure,v 1.4 2020/06/11 16:56:34 kn Exp $
+
+Removed hardcoded optimizations.
+
+Index: configure
+--- configure.orig
++++ configure
+@@ -235,7 +235,6 @@ esac
+ tryflag CFLAGS -pipe
+ 
+ # Try flags to optimize binary size
+-tryflag CFLAGS -O2
+ tryflag CFLAGS -ffunction-sections
+ tryflag CFLAGS -fdata-sections
+ tryldflag LDFLAGS_AUTO -Wl,--gc-sections