remove warnings about const string

NEWS

@@ -30,4 +30,5 @@ Misc:
      - results are submitted to the OpenJPEG dashboard (http://my.cdash.org/index.php?project=OPENJPEG)
      - images are located in 'http://openjpeg.googlecode.com/svn/data' folder.
      - configuration files and utilities are located in 'tests' folder.
+    * OPJViewer re-activated (need wxWidgets)
     * Many bug fixes. See CHANGES for details.

applications/OPJViewer/source/icon1.xpm

@@ -1,5 +1,5 @@
 /* XPM */
-static char *icon1_xpm[] = {
+static const char *icon1_xpm[] = {
 /* columns rows colors chars-per-pixel */
 "32 32 41 1",
 "> c #97C4E7",

applications/OPJViewer/source/icon2.xpm

@@ -1,5 +1,5 @@
 /* XPM */
-static char *icon2_xpm[] = {
+static const char *icon2_xpm[] = {
 /* columns rows colors chars-per-pixel */
 "32 32 15 1",
 ". c Black",

applications/OPJViewer/source/icon3.xpm

@@ -1,5 +1,5 @@
 /* XPM */
-static char *icon3_xpm[] = {
+static const char *icon3_xpm[] = {
 /* columns rows colors chars-per-pixel */
 "32 32 41 1",
 "6 c #EDF2FB",

applications/OPJViewer/source/icon4.xpm

@@ -1,5 +1,5 @@
 /* XPM */
-static char *icon4_xpm[] = {
+static const char *icon4_xpm[] = {
 /* columns rows colors chars-per-pixel */
 "32 32 5 1",
 ". c Black",

applications/OPJViewer/source/icon5.xpm

@@ -1,5 +1,5 @@
 /* XPM */
-static char *icon5_xpm[] = {
+static const char *icon5_xpm[] = {
 /* columns rows colors chars-per-pixel */
 "32 32 41 1",
 "0 c #AAC1E8",

applications/OPJViewer/source/wxj2kparser.cpp

@@ -93,7 +93,7 @@ unsigned short int marker_val[] = {
 };
 
 // Marker names
-char *marker_name[] = {
+static const char *marker_name[] = {
 	"SOC", "SOT", "SOD", "EOC",
 	"SIZ",
 	"COD", "COC", "RGN", "QCD", "QCC", "POD",
@@ -109,7 +109,7 @@ char *marker_name[] = {
 };
 
 // Marker descriptions
-char *marker_descr[] = {
+static const char *marker_descr[] = {
 	"Start of codestream", "Start of tile-part", "Start of data", "End of codestream",
 	"Image and tile size",
 	"Coding style default", "Coding style component", "Region-of-interest", "Quantization default",