Canvas lib precompiled header fix; doc typos fixes; makefile.vc dbtable.cpp addition

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@10606 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

contrib/src/canvas/liner.cpp

@@ -8,6 +8,13 @@ Last Update 05-12-1995
 #pragma implementation "liner.cpp"
 #endif
 
+// For compilers that support precompilation, includes "wx/wx.h".
+#include "wx/wxprec.h"
+
+#ifdef __BORLANDC__
+    #pragma hdrstop
+#endif
+
 #include <math.h>
 
 #include <stdlib.h>