Clean up th ecompile process by centralizing the include files

- code compile tested, but due to a yet unresolved problem with
          parse.h's creation, compile not completed...

src/include/lib/stringinfo.h

@@ -0,0 +1,47 @@
+/*-------------------------------------------------------------------------
+ *
+ * stringinfo.h--
+ *    Declarations/definitons for "string" functions.
+ *
+ *
+ * Copyright (c) 1994, Regents of the University of California
+ *
+ * $Id: stringinfo.h,v 1.1 1996/08/28 07:22:41 scrappy Exp $
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef STRINGINFO_H
+#define STRINGINFO_H
+
+/*#include "c.h"		*/	/* for 'String' */
+
+/*-------------------------
+ * StringInfoData holds information about a string.
+ * 	'data' is the string.
+ *	'len' is the current string length (as returned by 'strlen')
+ *	'maxlen' is the size in bytes of 'data', i.e. the maximum string
+ *		size (includeing the terminating '\0' char) that we can
+ *		currently store in 'data' without having to reallocate
+ *		more space.
+ */
+typedef struct StringInfoData {
+    char *data;
+    int maxlen;
+    int len;
+} StringInfoData;
+
+typedef StringInfoData *StringInfo;
+
+/*------------------------
+ * makeStringInfo
+ * create a 'StringInfoData' & return a pointer to it.
+ */
+extern StringInfo makeStringInfo(void);
+
+/*------------------------
+ * appendStringInfo
+ * similar to 'strcat' but reallocates more space if necessary...
+ */
+extern void appendStringInfo(StringInfo str, char *buffer);
+
+#endif /* STRINGINFO_H */