#1 buildsystem patch and gcc 4.3 fix

[Kyle Centers]

This attached compressed patch file is a modification to the autotools build scripts used in JSBSim. There are a few changes in configure.in, and extensive modifications to the Makefile.am hierarchy. The effect of the modifications are:
- Libraries are now build using libtool, and have been renamed to libJSBSim.{la|lo|a|so}.
- 'make install' now works properly, and installs the libraries in ${prefix}/lib/JsBSim, the header files in ${prefix}/include/JSBSim, and the xml datasets in ${prefix}/share/JSBSim/{aircraft|engines|scripts|JSBsim.}

Also the file src/input_output/FGfdmSocket.cpp is required by gcc 4.3 to #include cstring.

This patch is against 0.9.13.

[Kyle Centers]

[Bertrand Coconnier]

JSBSim is no longer using the autotools for its build process. It is using CMake for a number of years.
This patch will not be applied.

Thanks for your submission.