mc: multple fixes (#2367)

* mc: use $TERMUX_PREFIX for ac_cv_path_(UN)ZIP

* mc: set path for perl, python and ruby

* mc: use python2 for extfs helpers

* ncurses: create symlinks under include/ncurses

* mc: set --with-ncurses-includes

* mc/ncurses: bump revision after updates

packages/mc/build.sh

@@ -1,13 +1,17 @@
 TERMUX_PKG_HOMEPAGE=https://www.midnight-commander.org/
 TERMUX_PKG_DESCRIPTION="Midnight Commander - a powerful file manager"
 TERMUX_PKG_VERSION=4.8.20
-TERMUX_PKG_REVISION=2
+TERMUX_PKG_REVISION=3
 TERMUX_PKG_SHA256=017ee7f4f8ae420a04f4d6fcebaabe5b494661075c75442c76e9c8b1923d501c
 TERMUX_PKG_SRCURL=http://ftp.midnight-commander.org/mc-${TERMUX_PKG_VERSION}.tar.xz
 TERMUX_PKG_DEPENDS="libandroid-support, ncurses, glib"
 TERMUX_PKG_EXTRA_CONFIGURE_ARGS="
-ac_cv_path_UNZIP=$PREFIX/bin/unzip
-ac_cv_path_ZIP=$PREFIX/bin/zip
+ac_cv_path_UNZIP=$TERMUX_PREFIX/bin/unzip
+ac_cv_path_ZIP=$TERMUX_PREFIX/bin/zip
+ac_cv_path_PERL=$TERMUX_PREFIX/bin/perl
+ac_cv_path_PYTHON=$TERMUX_PREFIX/bin/python
+ac_cv_path_RUBY=$TERMUX_PREFIX/bin/ruby
+--with-ncurses-includes=$TERMUX_PREFIX/include
 --with-ncurses-libs=$TERMUX_PREFIX/lib
 --with-screen=ncurses
 "

packages/mc/man2hlp.in.patch

@@ -0,0 +1,10 @@
+diff --git a/src/man2hlp/man2hlp.in b/src/man2hlp/man2hlp.in
+index f095830..f7a97ea 100644
+--- a/src/man2hlp/man2hlp.in
++++ b/src/man2hlp/man2hlp.in
+@@ -1,4 +1,4 @@
+-#! @PERL@ -w
++#! /usr/bin/perl -w
+ #
+ #  Man page to help file converter
+ #  Copyright (C) 1994, 1995, 1998, 2000, 2001, 2002, 2003, 2004, 2005,

packages/mc/use-python2-for-extfs-helpers.patch

@@ -0,0 +1,20 @@
+diff --git a/src/vfs/extfs/helpers/s3+.in b/src/vfs/extfs/helpers/s3+.in
+index 2ab596a..65b709b 100644
+--- a/src/vfs/extfs/helpers/s3+.in
++++ b/src/vfs/extfs/helpers/s3+.in
+@@ -1,4 +1,4 @@
+-#! @PYTHON@
++#! @PYTHON@2
+ # -*- coding: utf-8 -*-
+ 
+ #
+diff --git a/src/vfs/extfs/helpers/uc1541.in b/src/vfs/extfs/helpers/uc1541.in
+index dd7b7c4..8da6bfb 100644
+--- a/src/vfs/extfs/helpers/uc1541.in
++++ b/src/vfs/extfs/helpers/uc1541.in
+@@ -1,4 +1,4 @@
+-#! @PYTHON@
++#! @PYTHON@2
+ """
+ UC1541 Virtual filesystem
+ 

packages/ncurses/build.sh

@@ -1,6 +1,7 @@
 TERMUX_PKG_HOMEPAGE=http://invisible-island.net/ncurses/
 TERMUX_PKG_DESCRIPTION="Library for text-based user interfaces in a terminal-independent manner"
 TERMUX_PKG_VERSION=6.1.20180331
+TERMUX_PKG_REVISION=1
 TERMUX_PKG_SHA256=031337b0f1b7a2b4a0752deb4dde78f5c21a6dd1c3880e2a8da15796767169b7
 TERMUX_PKG_SRCURL=https://dl.bintray.com/termux/upstream/ncurses-${TERMUX_PKG_VERSION:0:3}-${TERMUX_PKG_VERSION:4}.tgz
 # --without-normal disables static libraries:
@@ -48,15 +49,15 @@ termux_step_post_make_install () {
 		done
 		(cd pkgconfig && ln -s -f ${lib}w.pc `echo $lib | sed 's/w//'`.pc)
 	done
-        # some packages wants libcurses while building/compiling
+	# some packages want libcurses while building/compiling
 	ln -sf libncurses.so libcurses.so
 
-	# Some packages wants this:
+	# Some packages want these:
 	cd $TERMUX_PREFIX/include/
-	rm -Rf ncursesw
-	mkdir ncursesw
-	cd ncursesw
-	ln -s ../{ncurses.h,termcap.h,panel.h,unctrl.h,menu.h,form.h,tic.h,nc_tparm.h,term.h,eti.h,term_entry.h,ncurses_dll.h,curses.h} .
+	rm -Rf ncurses{,w}
+	mkdir ncurses{,w}
+	ln -s ../{ncurses.h,termcap.h,panel.h,unctrl.h,menu.h,form.h,tic.h,nc_tparm.h,term.h,eti.h,term_entry.h,ncurses_dll.h,curses.h} ncurses
+	ln -s ../{ncurses.h,termcap.h,panel.h,unctrl.h,menu.h,form.h,tic.h,nc_tparm.h,term.h,eti.h,term_entry.h,ncurses_dll.h,curses.h} ncursesw
 }
 
 termux_step_post_massage () {