Avoid clash with the Win32 CreateBitmap()

On x64 Windows there is no name mangling for Win32 API calls, so a
plain extern "C" CreateBitmap() function clashes.

Change-Id: I39ca92c259f660f00952ec0a8065bae1e747cffb

vcl/source/filter/jpeg/jpeg.cxx

@@ -38,7 +38,7 @@ using namespace ::com::sun::star;
 
 #define JPEGMINREAD 512
 
-extern "C" void* CreateBitmap( void* pJPEGReader, void* pJPEGCreateBitmapParam )
+extern "C" void* CreateBitmapFromJPEGReader( void* pJPEGReader, void* pJPEGCreateBitmapParam )
 {
     return ( (JPEGReader*) pJPEGReader )->CreateBitmap( pJPEGCreateBitmapParam );
 }

vcl/source/filter/jpeg/jpeg.h

@@ -53,7 +53,7 @@ long    WriteJPEG( void* pJPEGWriter, void* pOStm, long nWidth, long nHeight, lo
 void*   GetScanline( void* pJPEGWriter, long nY );
 
 void    ReadJPEG( void* pJPEGReader, void* pIStm, long* pLines );
-void*   CreateBitmap( void* pJPEGReader, void* pJPEGCreateBitmapParam );
+void*   CreateBitmapFromJPEGReader( void* pJPEGReader, void* pJPEGCreateBitmapParam );
 
 /* TODO: when incompatible changes are possible again
    the preview size hint should be redone */

vcl/source/filter/jpeg/jpegc.c

@@ -146,7 +146,7 @@ void ReadJPEG( void* pJPEGReader, void* pIStm, long* pLines )
     aCreateBitmapParam.X_density = cinfo.X_density;
     aCreateBitmapParam.Y_density = cinfo.Y_density;
     aCreateBitmapParam.bGray = cinfo.output_components == 1;
-    pDIB = CreateBitmap( pJPEGReader, &aCreateBitmapParam );
+    pDIB = CreateBitmapFromJPEGReader( pJPEGReader, &aCreateBitmapParam );
     nAlignedWidth = aCreateBitmapParam.nAlignedWidth;
     range_limit=cinfo.sample_range_limit;