[patch] fix a warning for gcc 4.3 and an include

[William Hubbs <w.d.hubbs@xxxxxxxxxxx>]

Hello Raman,

the following patch for the espeak server fixes a warning for gcc 4.3,
and fixes  the way speak_lib.h is included.  The include file is
installed in /usr/include/espeak/speak_lib.h here, and as far as I know,
that is the place where it gets installed by default.

Please let me know what you think about this patch.

Thanks much,

William

Index: tclespeak.cpp
===================================================================
--- tclespeak.cpp	(revision 6204)
+++ tclespeak.cpp	(working copy)
@@ -42,7 +42,7 @@
 #include <stdlib.h>
 #include <string>
 #include <assert.h>
-#include "speak_lib.h"
+#include <espeak/speak_lib.h>
 #ifndef ESPEAK_API_REVISION
 #define ESPEAK_API_REVISION 1
 #endif
@@ -556,7 +556,7 @@
       aDefaultLang = (char*)getenv("LANG");
       if (aDefaultLang == NULL)
 	{
-	  aDefaultLang = "en";
+	  aDefaultLang = (char *) "en";
 	}
     }