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/include/Dt/vista.h

@@ -86,7 +86,6 @@
 # define __SVR4_I386_ABI_L1__
 #endif
 #include <limits.h>	/* pickup WORD_BIT, LONG_BIT */
-#if defined(__linux__) || defined(CSRG_BASED) || defined(sun)
 # undef __SVR4_I386_ABI_L1__
 # ifndef WORD_BIT
 # define WORD_BIT 32
@@ -94,7 +93,6 @@
 # ifndef LONG_BIT
 # define LONG_BIT 32
 # endif
-#endif
 
 #define db_VERSION "3.dt"	/* was "3.10" */
 #define dbd_VERSION "V3.dt\032"	/* was "V3.00\032" */

cde/include/EUSCompat.h

@@ -52,9 +52,7 @@ extern "C" {
 ** System V R4 based systems define the stuff we need in
 ** sys/types.h. Include that and then we are done.
 */
-#if defined(__linux__) || defined(SunOS) || defined(CSRG_BASED)
-# include <sys/types.h>
-#endif
+#include <sys/types.h>
 
 #if defined(CSRG_BASED) || defined(__linux__)
 # include <sys/socket.h>