GHOST: OpenGL errors now use "file:line: " contention for errors

Make OpenGL errors match formatting used by GCC & clang
(as well as Blender's logging), so utilities that recognize this
convention can be used to quickly access this location.

intern/ghost/intern/GHOST_Context.cpp

@@ -101,7 +101,7 @@ bool win32_chk(bool result, const char *file, int line, const char *text)
 
 #  ifndef NDEBUG
     _ftprintf(
-        stderr, "%s(%d):[%s] -> Win32 Error# (%lu): %s", file, line, text, ulong(error), msg);
+        stderr, "%s:%d: [%s] -> Win32 Error# (%lu): %s", file, line, text, ulong(error), msg);
 #  else
     _ftprintf(stderr, "Win32 Error# (%lu): %s", ulong(error), msg);
 #  endif

intern/ghost/intern/GHOST_ContextEGL.cpp

@@ -123,7 +123,7 @@ static bool egl_chk(bool result,
 
 #ifndef NDEBUG
     fprintf(stderr,
-            "%s(%d):[%s] -> EGL Error (0x%04X): %s: %s\n",
+            "%s:%d: [%s] -> EGL Error (0x%04X): %s: %s\n",
             file,
             line,
             text,