Extend autotools build to create shared library libopenocd with libtool:

- Add libtoolize step too bootstrap script; creates ltmain.sh script.
- Add AC_PROG_LIBTOOL to configure.in to add libtool support to build.
- Change Makefile.am library rules from static (_a) to libtool (_la).
- Install libopenocd.{la,so,a} in $(libdir); update openocd link rules.
- Extend MAINTAINERCLEANFILES in top-level Makefile.am to remove ltmain.sh.


git-svn-id: svn://svn.berlios.de/openocd/trunk@1695 b42882b7-edfa-0310-969c-e2dbd0fdcd60

src/flash/Makefile.am

@@ -4,8 +4,8 @@ AM_CPPFLAGS = \
 	-I$(top_srcdir)/src/target
 
 METASOURCES = AUTO
-noinst_LIBRARIES = libflash.a
-libflash_a_SOURCES = \
+noinst_LTLIBRARIES = libflash.la
+libflash_la_SOURCES = \
 	flash.c lpc2000.c cfi.c non_cfi.c at91sam7.c \
 	str7x.c str9x.c aduc702x.c nand.c nand_ecc.c \
 	lpc3180_nand_controller.c stellaris.c str9xpec.c stm32x.c tms470.c \