Peter M. Groen / libmodbus

First, it's $host_os which should be checked, not $target (remember,
'build' is where we build, host is where the program will be run, and
target is only for compiler - for which system the compiler will
generate code.

Second, correct OS pattern - e.g. on debian with i586-mingw32msvc-gcc,
host_os is mingw32msvc, so we better for *mingw32*.

Also, it's better to call AC_CANONICAL_* for normalizing variables.

Build tested with `configure --host=i586-mingw32msvc` on Debian
GNU/Linux 5.0 (Lenny).

Cc: Александр Сёмуха <sav@mns.spb.ru>
Signed-off-by: Kirill Smelkov <kirr@mns.spb.ru>
Signed-off-by: Stéphane Raimbault <stephane.raimbault@gmail.com>

- check strlcpy in configure.ac
- test for empty device string
- test truncated device string

- move termios header in RTU backend
- move TCP headers in TCP backend
- use native serial on Win32 for Cygwin
- avoid too many defines

I prefer to remove the check rather than to add the solution used
by Wine as we don't care about the associated define:

AC_CHECK_HEADERS([ \
    ...
    netinet/ip.h \
    netinet/tcp.h \
    ...
],,,[
    #ifdef HAVE_NETINET_IP_H
    # include <netinet/ip.h>
    #endif
])

This change is asked by Barry Grumbine to fix build on OpenBSD

Some small modifications were neccessary to make libmodbus build using
a MinGW (cross-)compiler. Libtool is now configured to build DLL files
on Win32. The wsock32 library has been added to the list of libraries
to link against.

Signed-off-by: Stéphane Raimbault <stephane.raimbault@gmail.com>

The cycle will end on a 3.0 release instead of 2.2 as intended.
There are too many changes in the API to keep the same major number.

- partial revert of 93ce13656103cbb459ebd630d055a008dbb059f3
- it was a bit confusing to always edit modbus.h.in
- the header inclusion still unchanged (<modbus.h>)

The ID used at init time will be the device ID of the caller and
the server ID in request functions is the target to reach.

The library is now simpler to include (only one <modbus.h>)
To avoid confusion MB_VERSION defines have been renamed to
LIBMODBUS_VERSION.

This reverts commit df0cf7927249954f15e0aa85b02d21b990fa9af9.
Use <modbus.h> in tests.

Inspired by the Clutter project and work done by Florian Forster.

Avoid to create generic INSTALL file

- run autoupdate
- remove some warnings
- enable silent rules
- bump the version to 2.1.0

They came with autoconf-2.59, which does not support AC_TYPE_UINT*_T .

- removed maintainer-mode
- RANLIB useless

Reported and tested by Yishin Li.

Real fix #333455 - IPTOS_LOWDELAY not supported on cygwin
Thank to Yishin Li for the better problem description.

- check IPTOS_LOWDELAY define in configure
- generate a config.h
- include the generated config.h in modbus.c

- detected by autoscan
- uintX_T
- added functions

- upgrade to WAF 1.5.3
- smaller WAF scripts
- fix using of modbus.h with WAF
- updated configure.ac and Makefile.am files
- change include paths in test files

- cleanup in autogen.sh (only 2 lines now!)
- remove the version redundancy in configure.ac

- separate tests directory
- regroup modbus.h and modbus.c in the same dir
- updated waf scripts
- updated autotools files
- bump application version to 1.9.0
- bump library number to 2.0.0

- Fix modbus.h path

- move modbus.h => include/modbus/
- create a pkgconfig file (module.pc)
- install modbus.h in $(includedir)
- new path to reach modbus.h

(automatically generated log message)