rott: add execinfo for musl, remove patch.

srcpkgs/rott/patches/no_execinfo.patch

@@ -1,11 +0,0 @@
---- rott/dosutil.c.orig	2016-07-06 16:39:54.045772922 -0400
-+++ rott/dosutil.c	2016-07-06 16:40:27.862760218 -0400
-@@ -197,7 +197,7 @@
- 	printf ("\033[m");
- }
- 
--#if !defined(__CYGWIN__) && !defined(__MINGW32__)
-+#if defined(__GLIBC__)
- #include <execinfo.h>
- 
- void print_stack (int level)

srcpkgs/rott/template

@@ -1,20 +1,22 @@
 # Template file for 'rott'
 pkgname=rott
 version=1.1.2
-revision=1
-build_style=gnu-makefile
+revision=2
 build_wrksrc=rott
-makedepends="SDL_mixer-devel"
-short_desc="A port of Apogee's 3D action title Rise of the Triad"
+build_style=gnu-makefile
+make_use_env=yes
+makedepends="SDL_mixer-devel SDL-devel"
+short_desc="Port of Apogee's 3D action title Rise of the Triad"
 maintainer="Diogo Leal <diogo@diogoleal.com>"
-license="GPL-2"
+license="GPL-2.0-or-later"
 homepage="http://icculus.org/rott/"
 distfiles="${homepage}/releases/rott-${version}.tar.gz"
 checksum=102516e8c312f6b0bbf6c623e1f01cbfbbc314ace8adfe1f201d47b15bd927ff
 
-do_build() {
-	make
-}
+if [ "$XBPS_TARGET_LIBC" = musl ]; then
+	makedepends+=" libexecinfo-devel"
+	export LDLIBS="-lexecinfo"
+fi
 
 do_install() {
 	vbin "${FILESDIR}/rott"
@@ -23,9 +25,3 @@ do_install() {
 	vinstall ../misc/rott.desktop 644 usr/share/applications
 	vinstall ../misc/rott.xpm 644 usr/share/pixmaps/rott.xpm
 }
-
-# REMARKS:
-# There is a single patch in place because a feature is optionally disabled for
-# mingw but we need it disabled for musl, since it's not in muslc.
-# The makefile is currently very nice and uses our CFLAGS and LDFLAGS without
-# any patching.