Remove make preinstall

A speciality of the RTEMS build system was the make preinstall step.  It
copied header files from arbitrary locations into the build tree.  The
header files were included via the -Bsome/build/tree/path GCC command
line option.

This has at least seven problems:

* The make preinstall step itself needs time and disk space.

* Errors in header files show up in the build tree copy.  This makes it
  hard for editors to open the right file to fix the error.

* There is no clear relationship between source and build tree header
  files.  This makes an audit of the build process difficult.

* The visibility of all header files in the build tree makes it
  difficult to enforce API barriers.  For example it is discouraged to
  use BSP-specifics in the cpukit.

* An introduction of a new build system is difficult.

* Include paths specified by the -B option are system headers.  This
  may suppress warnings.

* The parallel build had sporadic failures on some hosts.

This patch removes the make preinstall step.   All installed header
files are moved to dedicated include directories in the source tree.
Let @RTEMS_CPU@ be the target architecture, e.g. arm, powerpc, sparc,
etc.  Let @RTEMS_BSP_FAMILIY@ be a BSP family base directory, e.g.
erc32, imx, qoriq, etc.

The new cpukit include directories are:

* cpukit/include

* cpukit/score/cpu/@RTEMS_CPU@/include

* cpukit/libnetworking

The new BSP include directories are:

* bsps/include

* bsps/@RTEMS_CPU@/include

* bsps/@RTEMS_CPU@/@RTEMS_BSP_FAMILIY@/include

There are build tree include directories for generated files.

The include directory order favours the most general header file, e.g.
it is not possible to override general header files via the include path
order.

The "bootstrap -p" option was removed.  The new "bootstrap -H" option
should be used to regenerate the "headers.am" files.

Update #3254.

bsps/arm/smdk2410/include/bsp.h

@@ -0,0 +1,80 @@
+/**
+ * @file
+ * @ingroup arm_smdk2410
+ * @brief Global BSP definitons.
+ */
+
+/*
+ *  Copyright (c) Canon Research France SA.]
+ *  Emmanuel Raguet, mailto:raguet@crf.canon.fr
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.rtems.org/license/LICENSE.
+ */
+
+#ifndef LIBBSP_ARM_SMDK2410_BSP_H
+#define LIBBSP_ARM_SMDK2410_BSP_H
+
+#include <bspopts.h>
+#include <bsp/default-initial-extension.h>
+
+#include <rtems.h>
+#include <s3c24xx.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define BSP_FEATURE_IRQ_EXTENSION
+
+/**
+ * @brief functions to get the differents s3c2400 clks
+ * @{
+ */
+
+uint32_t get_FCLK(void);
+uint32_t get_HCLK(void);
+uint32_t get_PCLK(void);
+uint32_t get_UCLK(void);
+
+/** @} */
+
+/* What is the input clock freq in hertz? */
+/** @brief 12 MHz oscillator */
+#define BSP_OSC_FREQ  12000000
+/** @brief FCLK=133Mhz */
+#define M_MDIV 81
+#define M_PDIV 2
+#define M_SDIV 1
+/** @brief HCLK=FCLK/2, PCLK=FCLK/2 */
+#define M_CLKDIVN 2
+/** @brief enable refresh */
+#define REFEN	0x1
+/** @brief CBR(CAS before RAS)/auto refresh */
+#define TREFMD	0x0
+/** @brief 2 clk */
+#define Trp	0x0
+/** @brief 7 clk */
+#define Trc	0x3
+/** @brief 3 clk */
+#define Tchr	0x2
+
+/**
+ * @brief This BSP provides its own IDLE thread to override the RTEMS one.
+ *
+ *  So we prototype it and define the constant confdefs.h expects
+ *  to configure a BSP specific one.
+ */
+void *bsp_idle_thread(uintptr_t ignored);
+
+/** @} */
+
+#define BSP_IDLE_TASK_BODY bsp_idle_thread
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _BSP_H */
+