Replace SDL_icon.xpm with copy exported from GIMP

Wasn't actually being displayed on the window before

src/sdl/SDL_icon.xpm

 /* XPM */
-static const char *SDL_icon_xpm[] = {
-/* columns rows colors chars-per-pixel */
-"16 16 28 1 ",
-"  c None",
-". c #470000",
-"X c #5F0000",
-"o c #7F0000",
-"O c #533F1F",
-"+ c #752900",
-"@ c #7F532F",
-"# c #21224E",
-"$ c #AF0000",
-"% c #DF0000",
-"& c #FF3F3F",
-"* c #874307",
-"= c #9B5B13",
-"- c #B37347",
-"; c #FF5F5F",
-": c #C39B2F",
-"> c yellow",
-", c #E39767",
-"< c #EBDB57",
-"1 c #414183",
-"2 c #5252FF",
-"3 c #979797",
-"4 c gray75",
-"5 c #FFB78B",
-"6 c #FFCB97",
-"7 c #FFCFB3",
-"8 c #E4E4E4",
-"9 c white",
-/* pixels */
-"      9999      ",
-"    99----99    ",
-"   9-,6666,-9   ",
-"  9@,679976,@9  ",
-"99O-66677666-O99",
-"*+X,61166116,X+*",
-"==*+-22,,22-+*==",
-"+*=*+##&&##+*=*+",
-"=====*$;;$*=====",
-"+++++++;;+++++++",
-".X+5483883845+X.",
-"oo:-59499495-:oo",
-"oo::+,5665,+::oo",
-"$%<>>-++++->><%$",
-"%%>>:$$$$$$:>>%%",
-"%%>:$%%%%%%$:>%%"
-};
+static const char * SDL_icon_xpm[] = {
+"64 64 30 1",
+" 	c None",
+".	c #000000",
+"+	c #FFFFFF",
+"@	c #B37347",
+"#	c #E39767",
+"$	c #FFCB97",
+"%	c #7F532F",
+"&	c #FFCFB3",
+"*	c #533F1F",
+"=	c #874307",
+"-	c #752900",
+";	c #5F0000",
+">	c #414183",
+",	c #9B5B13",
+"'	c #5252FF",
+")	c #21224E",
+"!	c #FF3F3F",
+"~	c #AF0000",
+"{	c #FF5F5F",
+"]	c #470000",
+"^	c #FFB78B",
+"/	c #BFBFBF",
+"(	c #E4E4E4",
+"_	c #979797",
+":	c #7F0000",
+"<	c #C39B2F",
+"[	c #DF0000",
+"}	c #EBDB57",
+"|	c #FFFF00",
+"1	c #000000",
+"                        ++++++++++++++++                        ",
+"                        ++++++++++++++++                        ",
+"                        ++++++++++++++++                        ",
+"                        ++++++++++++++++                        ",
+"                ++++++++@@@@@@@@@@@@@@@@++++++++                ",
+"                ++++++++@@@@@@@@@@@@@@@@++++++++                ",
+"                ++++++++@@@@@@@@@@@@@@@@++++++++                ",
+"                ++++++++@@@@@@@@@@@@@@@@++++++++                ",
+"            ++++@@@@####$$$$$$$$$$$$$$$$####@@@@++++            ",
+"            ++++@@@@####$$$$$$$$$$$$$$$$####@@@@++++            ",
+"            ++++@@@@####$$$$$$$$$$$$$$$$####@@@@++++            ",
+"            ++++@@@@####$$$$$$$$$$$$$$$$####@@@@++++            ",
+"        ++++%%%%####$$$$&&&&++++++++&&&&$$$$####%%%%++++        ",
+"        ++++%%%%####$$$$&&&&++++++++&&&&$$$$####%%%%++++        ",
+"        ++++%%%%####$$$$&&&&++++++++&&&&$$$$####%%%%++++        ",
+"        ++++%%%%####$$$$&&&&++++++++&&&&$$$$####%%%%++++        ",
+"++++++++****@@@@$$$$$$$$$$$$&&&&&&&&$$$$$$$$$$$$@@@@****++++++++",
+"++++++++****@@@@$$$$$$$$$$$$&&&&&&&&$$$$$$$$$$$$@@@@****++++++++",
+"++++++++****@@@@$$$$$$$$$$$$&&&&&&&&$$$$$$$$$$$$@@@@****++++++++",
+"++++++++****@@@@$$$$$$$$$$$$&&&&&&&&$$$$$$$$$$$$@@@@****++++++++",
+"====----;;;;####$$$$>>>>>>>>$$$$$$$$>>>>>>>>$$$$####;;;;----====",
+"====----;;;;####$$$$>>>>>>>>$$$$$$$$>>>>>>>>$$$$####;;;;----====",
+"====----;;;;####$$$$>>>>>>>>$$$$$$$$>>>>>>>>$$$$####;;;;----====",
+"====----;;;;####$$$$>>>>>>>>$$$$$$$$>>>>>>>>$$$$####;;;;----====",
+",,,,,,,,====----@@@@''''''''########''''''''@@@@----====,,,,,,,,",
+",,,,,,,,====----@@@@''''''''########''''''''@@@@----====,,,,,,,,",
+",,,,,,,,====----@@@@''''''''########''''''''@@@@----====,,,,,,,,",
+",,,,,,,,====----@@@@''''''''########''''''''@@@@----====,,,,,,,,",
+"----====,,,,====----))))))))!!!!!!!!))))))))----====,,,,====----",
+"----====,,,,====----))))))))!!!!!!!!))))))))----====,,,,====----",
+"----====,,,,====----))))))))!!!!!!!!))))))))----====,,,,====----",
+"----====,,,,====----))))))))!!!!!!!!))))))))----====,,,,====----",
+",,,,,,,,,,,,,,,,,,,,====~~~~{{{{{{{{~~~~====,,,,,,,,,,,,,,,,,,,,",
+",,,,,,,,,,,,,,,,,,,,====~~~~{{{{{{{{~~~~====,,,,,,,,,,,,,,,,,,,,",
+",,,,,,,,,,,,,,,,,,,,====~~~~{{{{{{{{~~~~====,,,,,,,,,,,,,,,,,,,,",
+",,,,,,,,,,,,,,,,,,,,====~~~~{{{{{{{{~~~~====,,,,,,,,,,,,,,,,,,,,",
+"----------------------------{{{{{{{{----------------------------",
+"----------------------------{{{{{{{{----------------------------",
+"----------------------------{{{{{{{{----------------------------",
+"----------------------------{{{{{{{{----------------------------",
+"]]]];;;;----^^^^////((((____((((((((____((((////^^^^----;;;;]]]]",
+"]]]];;;;----^^^^////((((____((((((((____((((////^^^^----;;;;]]]]",
+"]]]];;;;----^^^^////((((____((((((((____((((////^^^^----;;;;]]]]",
+"]]]];;;;----^^^^////((((____((((((((____((((////^^^^----;;;;]]]]",
+"::::::::<<<<@@@@^^^^++++////++++++++////++++^^^^@@@@<<<<::::::::",
+"::::::::<<<<@@@@^^^^++++////++++++++////++++^^^^@@@@<<<<::::::::",
+"::::::::<<<<@@@@^^^^++++////++++++++////++++^^^^@@@@<<<<::::::::",
+"::::::::<<<<@@@@^^^^++++////++++++++////++++^^^^@@@@<<<<::::::::",
+"::::::::<<<<<<<<----####^^^^$$$$$$$$^^^^####----<<<<<<<<::::::::",
+"::::::::<<<<<<<<----####^^^^$$$$$$$$^^^^####----<<<<<<<<::::::::",
+"::::::::<<<<<<<<----####^^^^$$$$$$$$^^^^####----<<<<<<<<::::::::",
+"::::::::<<<<<<<<----####^^^^$$$$$$$$^^^^####----<<<<<<<<::::::::",
+"~~~~[[[[}}}}||||||||@@@@----------------@@@@||||||||}}}}[[[[~~~~",
+"~~~~[[[[}}}}||||||||@@@@----------------@@@@||||||||}}}}[[[[~~~~",
+"~~~~[[[[}}}}||||||||@@@@----------------@@@@||||||||}}}}[[[[~~~~",
+"~~~~[[[[}}}}||||||||@@@@----------------@@@@||||||||}}}}[[[[~~~~",
+"[[[[[[[[||||||||<<<<~~~~~~~~~~~~~~~~~~~~~~~~<<<<||||||||[[[[[[[[",
+"[[[[[[[[||||||||<<<<~~~~~~~~~~~~~~~~~~~~~~~~<<<<||||||||[[[[[[[[",
+"[[[[[[[[||||||||<<<<~~~~~~~~~~~~~~~~~~~~~~~~<<<<||||||||[[[[[[[[",
+"[[[[[[[[||||||||<<<<~~~~~~~~~~~~~~~~~~~~~~~~<<<<||||||||[[[[[[[[",
+"[[[[[[[[||||<<<<~~~~[[[[[[[[[[[[[[[[[[[[[[[[~~~~<<<<||||[[[[[[[[",
+"[[[[[[[[||||<<<<~~~~[[[[[[[[[[[[[[[[[[[[[[[[~~~~<<<<||||[[[[[[[[",
+"[[[[[[[[||||<<<<~~~~[[[[[[[[[[[[[[[[[[[[[[[[~~~~<<<<||||[[[[[[[[",
+"[[[[[[[[||||<<<<~~~~[[[[[[[[[[[[[[[[[[[[[[[[~~~~<<<<||||[[[[[[[["};