This mainly moves the STM32 timers' code to the common area.

F2 and F4 have a common section to deal with the options register (TIM2 and TIM5 only)
L1 has been made common with timer_common_all as its options register has very different settings to F2/F4. Code is in the L1/timer.c L1/timer.h files

Note that F3 and F05 timers should fit into this scheme, with F3 having additional features.

Bundled with this is L1/pwr.h to change a documentation setting
Also all the Doxyfiles have added "ENABLE_PREPROCESSING = NO" to fix a problem introduced by commit 118.

include/libopencm3/stm32/f1/timer.h

@@ -0,0 +1,40 @@
+/** @defgroup timer_defines Timer Defines
+
+@brief <b>libopencm3 Defined Constants and Types for the STM32F1xx Timers</b>
+
+@ingroup STM32F1xx_defines
+
+@version 1.0.0
+
+@date 8 March 2013
+
+@author @htmlonly &copy; @endhtmlonly 2011 Fergus Noble <fergusnoble@gmail.com>
+
+LGPL License Terms @ref lgpl_license
+*/
+
+/*
+ * This file is part of the libopencm3 project.
+ *
+ * Copyright (C) 2011 Fergus Noble <fergusnoble@gmail.com>
+ *
+ * This library is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef LIBOPENCM3_TIMER_H
+#define LIBOPENCM3_TIMER_H
+
+#include <libopencm3/stm32/common/timer_common_all.h>
+
+#endif