removed warnings in proj4

@@ -76,7 +76,7 @@
  * datum name for the comments if available. 
  */
 
-C_NAMESPACE struct PJ_DATUMS pj_datums[] = {
+struct PJ_DATUMS pj_datums[] = {
 /* id       definition                               ellipse  comments */
 /* --       ----------                               -------  -------- */
 "WGS84",    "towgs84=0,0,0", 		             "WGS84", "",
@@ -102,7 +102,7 @@ struct PJ_DATUMS *pj_get_datums_ref()
     return pj_datums;
 }
 
-C_NAMESPACE struct PJ_PRIME_MERIDIANS pj_prime_meridians[] = {
+struct PJ_PRIME_MERIDIANS pj_prime_meridians[] = {
     /* id        definition                         */
     /* --        ----------                         */
     "greenwich", "0dE",

@@ -5,7 +5,7 @@ static const char SCCSID[]="@(#)pj_ellps.c	4.6	95/08/25	GIE	REL";
 #define PJ_ELLPS__
 #include "projects.h"
 
-C_NAMESPACE struct PJ_ELLPS
+struct PJ_ELLPS
 pj_ellps[] = {
 "MERIT",	"a=6378137.0", "rf=298.257", "MERIT 1983",
 "SGS85",	"a=6378136.0", "rf=298.257",  "Soviet Geodetic System 85",

@@ -5,7 +5,7 @@ static const char SCCSID[]="@(#)pj_errno.c	4.3	95/06/03	GIE	REL";
 
 #include "projects.h"
 
-C_NAMESPACE int pj_errno = 0;
+int pj_errno = 0;
 
 /************************************************************************/
 /*                          pj_get_errno_ref()                          */

@@ -7,7 +7,7 @@ static const char SCCSID[]="@(#)pj_units.c	4.6	93/06/12	GIE	REL";
 /* Field 2 that contains the multiplier to convert named units to meters
 ** may be expressed by either a simple floating point constant or a
 ** numerator/denomenator values (e.g. 1/1000) */
-C_NAMESPACE struct PJ_UNITS
+struct PJ_UNITS
 pj_units[] = {
 	"km",	"1000.",	"Kilometer",
 	"m",	"1.",		"Meter",