Clean up Python embed.i

Remove duplicate (aside from comment formatting) embed15.i.

Remove references to Python 1.5.

Tested and remarkably still works with Python 2.7, so update
documentation and comments to reflect that.

Doc/Manual/Python.html

@@ -462,14 +462,14 @@ you simply do something like this:
 </p>
 
 <div class="shell"><pre>
-$ swig -python example.i
+$ swig -python -lembed.i example.i
 $ gcc example.c example_wrap.c \
         -Xlinker -export-dynamic \
-        -DHAVE_CONFIG_H -I/usr/local/include/python2.1 \
-        -I/usr/local/lib/python2.1/config \
-        -L/usr/local/lib/python2.1/config -lpython2.1 -lm -ldl \
+        -DHAVE_CONFIG_H -I/usr/include/python2.7 \
+        -I/usr/lib/python2.7/config-x86_64-linux-gnu \
+        -I/usr/lib/python2.7/config \
+        -L/usr/lib/python2.7/config -lpython2.7 -lm -ldl \
         -o mypython
-
 </pre></div>
 <p>
 You will need to supply the same libraries that were used to build Python the first
@@ -490,8 +490,8 @@ hassle in the opinion of this author).
 
 <p>
 <b>Compatibility note:</b> The <tt>embed.i</tt> library file is
-deprecated and has not been maintained for several years.  Even though it
-appears to "work" with Python 2.1, no future support is guaranteed.
+deprecated and has not been actively maintained for many years.  Even though it
+appears to "work" with Python 2.7, no future support is guaranteed.
 If using static linking, you might want to rely on a different approach
 (perhaps using distutils).
 </p>