Removed trailing spaces in the most relevant files

Command used for the job:
egrep -rl ' $' --include *.c --include *.h --include  *.s --include  *.inc --include  *.txt *  | xargs sed -i 's/\s\+$//g'

Credits to Grant Murphy from Stack Overflow.

include/global.fieldmap.h

@@ -146,7 +146,7 @@ struct MapHeader
     /* 0x1A */ bool8 allowCycling:1;
                bool8 allowEscaping:1; // Escape Rope and Dig
                bool8 allowRunning:1;
-               bool8 showMapName:5; // the last 4 bits are unused 
+               bool8 showMapName:5; // the last 4 bits are unused
                                     // but the 5 bit sized bitfield is required to match
     /* 0x1B */ u8 battleType;
 };