add farsi (rtl) language map in tests from ajashton

tests/data/fonts/LICENCE.txt

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+XB Fonts.ttf from http://wiki.irmug.org/index.php/X_Series_2

tests/data/good_maps/rtl_text_map.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<Map srs="+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs" background-color="#eee">
+<!-- nik2img.py -b 60 46 80 28 text_styles.xml text_styles.png -->
+
+  <Style name="custom_font">
+    <Rule>
+      <TextSymbolizer 
+        name="[NAME_FA]"
+        face_name="XB Zar Regular"
+        fill="#000"
+        size="20"
+        halo_fill="#fff"
+        halo_radius="2"
+        dy="-2"
+        wrap_width="50"
+        line_spacing="3"
+        allow_overlap="true"
+     />
+      <TextSymbolizer 
+        name="[NAME_EN]"
+        face_name="DejaVu Sans Book"
+        text_transform="uppercase" 
+        fill="#000"
+        opacity="0.6"
+        size="10"
+        halo_fill="#fff"
+        halo_radius="2"
+        character_spacing="3"
+        dy="2"
+        wrap_width="50"
+        line_spacing="4"
+        allow_overlap="true"
+      />
+    </Rule>
+  </Style>
+
+  <Layer srs="+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs">
+    <StyleName>custom_font</StyleName>
+    <Datasource>
+      <Parameter name="file">../shp/farsi-labels</Parameter>
+      <Parameter name="type">shape</Parameter>
+    </Datasource>
+  </Layer>
+
+</Map>

tests/data/shp/farsi-labels.prj

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+GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137,298.257223563]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]]