OpenTTD: Add freetype support (#5000)

So that we can play with supported language.

games-simulation/openttd/openttd-1.7.1.recipe

@@ -6,7 +6,7 @@ features."
 HOMEPAGE="http://www.openttd.org"
 COPYRIGHT="2005-2016 OpenTTD Team"
 LICENSE="GNU GPL v2"
-REVISION="1"
+REVISION="2"
 SOURCE_URI="http://binaries.openttd.org/releases/$portVersion/openttd-$portVersion-source.tar.xz"
 CHECKSUM_SHA256="61190952a98d494d3fd62e395dd6c359609914d0ba8fe80eaeb585b7d62a1b36"
 ADDITIONAL_FILES="openttd.rdef"
@@ -23,20 +23,25 @@ REQUIRES="
 	openttd_msx
 	openttd_sfx
 	timgmsoundfont
+	lib:libfreetype$secondaryArchSuffix
 	lib:liblzma$secondaryArchSuffix
 	lib:liblzo2$secondaryArchSuffix
+	lib:libpng16$secondaryArchSuffix
 	lib:libsdl$secondaryArchSuffix
 	lib:libz$secondaryArchSuffix
 	"
 
 BUILD_REQUIRES="
 	haiku${secondaryArchSuffix}_devel
+	devel:libfreetype$secondaryArchSuffix
 	devel:liblzma$secondaryArchSuffix
 	devel:liblzo2$secondaryArchSuffix
+	devel:libpng16$secondaryArchSuffix
 	devel:libsdl$secondaryArchSuffix
 	devel:libz$secondaryArchSuffix
 	"
 BUILD_PREREQUIRES="
+	cmd:gawk
 	cmd:gcc$secondaryArchSuffix
 	cmd:git
 	cmd:make
@@ -50,7 +55,8 @@ BUILD()
 	# Non-autotools script, can't use runConfigure.
 	./configure --prefix=$prefix --binary-dir=$relativeAppsDir \
 		--data-dir=$relativeDataDir/openttd --doc-dir=$relativeDocDir/openttd \
-		--man-dir=$relativeManDir --icon-dir=trash --menu-dir=trash
+		--man-dir=$relativeManDir --icon-dir=trash --menu-dir=trash \
+		--with-freetype=2
 	make $jobArgs
 }