os2: remove dependency to gradd.h from IBM's ddk which is non-free:

Add a minimal my_gradd.h containing structures and constants only used
by SDL_os2vman.c -- based on public knowledge from around the internet
including pages from http://www.osfree.org and http://www.edm2.com .

src/video/os2/SDL_os2vman.c

@@ -20,22 +20,19 @@
 */
 #include "../../SDL_internal.h"
 #include "../SDL_sysvideo.h"
+
 #define INCL_DOSERRORS
 #define INCL_DOSPROCESS
 #define INCL_DOSMODULEMGR
 #define INCL_WIN
 #define INCL_GPI
 #define INCL_GPIBITMAPS /* GPI bit map functions */
 #include <os2.h>
-#include <gradd.h>
-#if 0 /* not used */
-#define INCL_GRE_DEVICE
-#define INCL_GRE_DEVMISC
-#include <pmddi.h>
-#endif
 #include "SDL_os2output.h"
 #include "SDL_os2video.h"
 
+#include "my_gradd.h"
+
 typedef struct _VODATA {
   PVOID      pBuffer;
   HRGN       hrgnVisible;

src/video/os2/my_gradd.h

@@ -0,0 +1,105 @@
+/*
+gradd.h structures and constants -- only the ones used by SDL_os2vman.c.
+
+Based on public knowledge from around the internet including pages from
+http://www.osfree.org and http://www.edm2.com
+*/
+
+#ifndef my_gradd_h_
+#define my_gradd_h_
+
+typedef struct _INITPROCOUT {
+  ULONG     ulLength;         /*  Length of the INITPROCOUT data structure, in bytes. */
+  ULONG     ulVRAMVirt;       /*  32-bit virtual address of VRAM. */
+} INITPROCOUT;
+typedef INITPROCOUT *PINITPROCOUT;
+
+#define RC_SUCCESS 0
+
+typedef ULONG GID;
+typedef ULONG (_System FNVMIENTRY) (
+  GID       gid, ULONG ulFunction,
+  PVOID     pIn,
+  PVOID     pOut /* PINITPROCOUT */
+);
+
+#define VMI_CMD_INITPROC 1
+#define VMI_CMD_TERMPROC 3
+#define VMI_CMD_BITBLT 8
+#define VMI_CMD_REQUESTHW 14
+#define VMI_CMD_QUERYCURRENTMODE 0x1001
+
+typedef struct _BMAPINFO {
+  ULONG     ulLength;         /* Length of the BMAPINFO data structure, in bytes. */
+  ULONG     ulType;           /* Description of the Blt. */
+  ULONG     ulWidth;          /* Width in pels of the bit map. */
+  ULONG     ulHeight;         /* Height in pels of the bit map. */
+  ULONG     ulBpp;            /* Number of bits per pel/color depth. */
+  ULONG     ulBytesPerLine;   /* Number of aligned bytes per line. */
+  PBYTE     pBits;            /* Pointer to bit-map bits. */
+} BMAPINFO;
+typedef BMAPINFO *PBMAPINFO;
+
+#define BMAP_VRAM 0
+#define BMAP_MEMORY 1
+
+typedef struct _BLTRECT {
+  ULONG     ulXOrg;           /* X origin of the destination Blt. */
+  ULONG     ulYOrg;           /* Y origin of the destination Blt. */
+  ULONG     ulXExt;           /* X extent of the BitBlt. */
+  ULONG     ulYExt;           /* Y extent of the BitBlt. */
+} BLTRECT;
+typedef BLTRECT *PBLTRECT;
+
+typedef struct _BITBLTINFO {
+  ULONG     ulLength;         /* Length of the BITBLTINFO data structure, in bytes. */
+  ULONG     ulBltFlags;       /* Flags for rendering of rasterized data. */
+  ULONG     cBlits;           /* Count of Blts to be performed. */
+  ULONG     ulROP;            /* Raster operation. */
+  ULONG     ulMonoBackROP;    /* Background mix if B_APPLY_BACK_ROP is set. */
+  ULONG     ulSrcFGColor;     /* Monochrome source Foreground color. */
+  ULONG     ulSrcBGColor;     /* Monochrome source Background color and transparent color. */
+  ULONG     ulPatFGColor;     /* Monochrome pattern Foreground color. */
+  ULONG     ulPatBGColor;     /* Monochrome pattern Background color. */
+  PBYTE     abColors;         /* Pointer to color translation table. */
+  PBMAPINFO pSrcBmapInfo;     /* Pointer to source bit map (BMAPINFO) */
+  PBMAPINFO pDstBmapInfo;     /* Pointer to destination bit map (BMAPINFO). */
+  PBMAPINFO pPatBmapInfo;     /* Pointer to pattern bit map (BMAPINFO). */
+  PPOINTL   aptlSrcOrg;       /* Pointer to array of source origin POINTLs. */
+  PPOINTL   aptlPatOrg;       /* Pointer to array of pattern origin POINTLs. */
+  PBLTRECT  abrDst;           /* Pointer to array of Blt rects. */
+  PRECTL    prclSrcBounds;    /* Pointer to source bounding rect of source Blts. */
+  PRECTL    prclDstBounds;    /* Pointer to destination bounding rect of destination Blts. */
+} BITBLTINFO;
+typedef BITBLTINFO *PBITBLTINFO;
+
+#define BF_DEFAULT_STATE 0x0
+#define BF_ROP_INCL_SRC (0x01 << 2)
+#define BF_PAT_HOLLOW   (0x01 << 8)
+
+typedef struct _GDDMODEINFO {
+  ULONG     ulLength;         /* Size of the GDDMODEINFO data structure, in bytes. */
+  ULONG     ulModeId;         /* ID used to make SETMODE request. */
+  ULONG     ulBpp;            /* Number of colors (bpp). */
+  ULONG     ulHorizResolution;/* Number of horizontal pels. */
+  ULONG     ulVertResolution; /* Number of vertical scan lines. */
+  ULONG     ulRefreshRate;    /* Refresh rate in Hz. */
+  PBYTE     pbVRAMPhys;       /* Physical address of VRAM. */
+  ULONG     ulApertureSize;   /* Size of VRAM, in bytes. */
+  ULONG     ulScanLineSize;   /* Size of one scan line, in bytes. */
+
+  ULONG     fccColorEncoding, ulTotalVRAMSize, cColors;
+} GDDMODEINFO;
+typedef GDDMODEINFO *PGDDMODEINFO;
+
+typedef struct _HWREQIN {
+  ULONG     ulLength;         /* Size of the HWREQIN data structure, in bytes. */
+  ULONG     ulFlags;          /* Request option flags. */
+  ULONG     cScrChangeRects;  /* Count of screen rectangles affected by HWREQIN. */
+  PRECTL    arectlScreen;     /* Array of screen rectangles affected by HWREQIN. */
+} HWREQIN;
+typedef HWREQIN *PHWREQIN;
+
+#define REQUEST_HW 0x01
+
+#endif /* my_gradd_h_ */