mg: Install man page to expected directory

packages/mg/GNUmakefile.patch

@@ -0,0 +1,12 @@
+diff -u -r ../mg-20180927/GNUmakefile ./GNUmakefile
+--- ../mg-20180927/GNUmakefile	2018-09-27 20:00:17.000000000 +0000
++++ ./GNUmakefile	2018-11-17 23:55:15.804955616 +0000
+@@ -11,7 +11,7 @@
+ bindir=		$(prefix)/bin
+ libdir=		$(prefix)/lib
+ includedir=	$(prefix)/include
+-mandir=		$(prefix)/man
++mandir=		$(prefix)/share/man
+ 
+ PKG_CONFIG=	/usr/bin/pkg-config --silence-errors
+ INSTALL=	/usr/bin/install

packages/mg/build.sh

@@ -1,13 +1,15 @@
 TERMUX_PKG_HOMEPAGE=https://github.com/hboetes/mg
 TERMUX_PKG_DESCRIPTION="microscopic GNU Emacs-style editor"
 TERMUX_PKG_VERSION=20180927
-TERMUX_PKG_SRCURL=https://github.com/hboetes/mg/archive/$TERMUX_PKG_VERSION.tar.gz
 TERMUX_PKG_SHA256=fbb09729ea00fe42dcdbc96ac7fc1d2b89eac651dec49e4e7af52fad4f5788f6
+TERMUX_PKG_SRCURL=https://github.com/hboetes/mg/archive/$TERMUX_PKG_VERSION.tar.gz
 TERMUX_PKG_DEPENDS="libbsd, ncurses"
 TERMUX_PKG_BUILD_IN_SRC=yes
+
 termux_step_pre_configure() {
 	CFLAGS+=" $CPPFLAGS"
 }
+
 termux_step_make_install() {
 	make prefix=$PREFIX install
 }