Generify source code

Previously we would fail in some parts of the code if we did not have a
premade configuration, now we use any code that was marked as Linux, BSD and
Solaris as our basis in order to support building unknown Unix systems.

cde/lib/DtMmdb/btree_berkeley/compat.h

@@ -85,14 +85,6 @@ typedef unsigned int	size_t;
 typedef unsigned int	sigset_t;
 #endif
 
-/*
- * If your system's vsnprintf returns a char *, not an int,
- * change the 0 to a 1.
- */
-#if !defined(_AIX) && !defined(__linux__) && !defined(CSRG_BASED) && !defined(sun)
-#define	VSPRINTF_CHARSTAR
-#endif
-
 /*
  * If you don't have POSIX 1003.1 signals, the signal code surrounding the 
  * temporary file creation is intended to block all of the possible signals