Fix compilation on platforms that need sys/loadavg.h for loadavg

Make mod_load look for sys/loadavg.h using configure and include it if found.

net/proftpd/Makefile.common

@@ -1,4 +1,4 @@
-# $NetBSD: Makefile.common,v 1.9 2019/10/13 19:52:47 maya Exp $
+# $NetBSD: Makefile.common,v 1.10 2019/12/09 19:22:57 nros Exp $
 
 # used by net/proftpd/Makefile
 # used by net/proftpd/Makefile.module
@@ -41,7 +41,8 @@ CHECK_SHLIBS_SKIP=	libexec/proftpd/*.a
 CHECK_SSP_SKIP=		${CHECK_SHLIBS_SKIP}
 
 pre-configure:
-	cd ${WRKSRC} && ${TOOLS_CMD.autoconf}
+	cd ${WRKSRC} && ${TOOLS_CMD.autoconf} &&\
+	cd contrib/mod_load && ${TOOLS_CMD.autoconf}
 
 .include "options.mk"
 

net/proftpd/distinfo

@@ -1,4 +1,4 @@
-$NetBSD: distinfo,v 1.48 2019/10/13 19:52:47 maya Exp $
+$NetBSD: distinfo,v 1.49 2019/12/09 19:22:57 nros Exp $
 
 SHA1 (proftpd-1.3.6.tar.gz) = 7e9269f9448c37f82e6faa9edaa3186ff5ba82d2
 RMD160 (proftpd-1.3.6.tar.gz) = 5da3934e46ea517ee6652382e5e3a9f87e591dd6
@@ -7,6 +7,9 @@ Size (proftpd-1.3.6.tar.gz) = 20251898 bytes
 SHA1 (patch-Make.rules.in) = 4689fcb4aff5c9b3a2e47a43b93e76101d54e812
 SHA1 (patch-Makefile.in) = 332dcd9d773770c10d876dc9da1dc7f6b1c15421
 SHA1 (patch-configure.in) = ed8e190a89cbfc3276d9e77f0bbb624f6d19f816
+SHA1 (patch-contrib_mod__load_configure.in) = 0a72c47bf813ffd2ca8f8188a2d8596ec4d60200
+SHA1 (patch-contrib_mod__load_mod__load.c) = c99e79b3c63dd2c5a14361568e1e68966bd456c5
+SHA1 (patch-contrib_mod__load_mod__load.h.in) = 83f5592a9c9a2a90ec500bba382326dccf8f05e5
 SHA1 (patch-contrib_mod__sftp_Makefile.in) = 8a805d777597b4fb06a45b484373880e535a0cee
 SHA1 (patch-contrib_mod_tls.c) = e36dfa9427804b41eb2ad49378b62890325d50ed
 SHA1 (patch-include_pfilter.h) = abc00fe5cc14115c937e9b3790d3c0ca259ee12c

net/proftpd/patches/patch-contrib_mod__load_configure.in

@@ -0,0 +1,13 @@
+$NetBSD: patch-contrib_mod__load_configure.in,v 1.1 2019/12/09 19:22:57 nros Exp $
+* solaris and derivates has loadavg in sys/loadavg.h
+--- contrib/mod_load/configure.in.orig	2019-12-09 18:12:06.479685628 +0000
++++ contrib/mod_load/configure.in
+@@ -63,7 +63,7 @@ AC_ARG_WITH(libraries,
+   ])
+ 
+ AC_HEADER_STDC
+-AC_CHECK_HEADERS(stdlib.h unistd.h limits.h fcntl.h)
++AC_CHECK_HEADERS(stdlib.h unistd.h limits.h fcntl.h sys/loadavg.h)
+ 
+ AC_SUBST(LDFLAGS)
+ 

net/proftpd/patches/patch-contrib_mod__load_mod__load.c

@@ -0,0 +1,15 @@
+$NetBSD: patch-contrib_mod__load_mod__load.c,v 1.1 2019/12/09 19:22:57 nros Exp $
+* solaris and derivates has loadavg in sys/loadavg.h
+--- contrib/mod_load/mod_load.c.orig	2019-12-09 18:07:41.734696143 +0000
++++ contrib/mod_load/mod_load.c
+@@ -303,6 +303,10 @@
+ #  define LDAV_SYMBOL "avenrun"
+ # endif
+ 
++# ifdef HAVE_SYS_LOADAVG_H
++#  include <sys/loadavg.h>
++# endif
++
+ # ifdef HAVE_UNISTD_H
+ #  include <unistd.h>
+ # endif

net/proftpd/patches/patch-contrib_mod__load_mod__load.h.in

@@ -0,0 +1,14 @@
+$NetBSD: patch-contrib_mod__load_mod__load.h.in,v 1.1 2019/12/09 19:22:57 nros Exp $
+* solaris and derivates has loadavg in sys/loadavg.h
+--- contrib/mod_load/mod_load.h.in.orig	2019-12-09 18:10:43.656037132 +0000
++++ contrib/mod_load/mod_load.h.in
+@@ -51,6 +51,9 @@
+ /* Define if you have the <stdlib.h> header file. */
+ #undef HAVE_STDLIB_H
+ 
++/* Define if you have the <sys/loadavg.h> header file. */
++#undef HAVE_SYS_LOADAVG_H
++
+ /* Define if you have the <unistd.h> header file.  */
+ #undef HAVE_UNISTD_H
+