Revert use of config.h

Revert
7162e8db74
088493d499

And drop AC_CONFIG_HEADERS so that config goes though the command line.
No longer generating config.h, update .gitignore

src/odbc/Makefile.am

@@ -1,6 +1,6 @@
 noinst_PROGRAMS	=	unittest
 lib_LTLIBRARIES	=	libmdbodbc.la
-AM_CFLAGS	=	$(GLIB_CFLAGS) $(ODBC_CFLAGS)
+AM_CFLAGS	=	-I$(top_srcdir)/include $(GLIB_CFLAGS) $(ODBC_CFLAGS)
 libmdbodbc_la_SOURCES	= odbc.c connectparams.c mdbodbc.h connectparams.h
 libmdbodbc_la_LIBADD	= ../libmdb/libmdb.la ../sql/libmdbsql.la
 libmdbodbc_la_LDFLAGS	= -avoid-version -export-symbols-regex '^(SQL|ODBCINST)'

src/odbc/connectparams.c

@@ -18,7 +18,6 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  */
 
-#include "config.h"
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>

src/odbc/odbc.c

@@ -21,7 +21,6 @@
 #define UNICODE
 #endif //ENABLE_ODBC_W
 
-#include "config.h"
 #include <sql.h>
 #include <sqlext.h>
 #include <string.h>

src/odbc/unittest.c

@@ -17,7 +17,6 @@
  */
 
 /* #include <windows.h> */
-#include "config.h"
 #include <stdio.h>
 #include <sql.h>
 #include <sqlext.h>