examples: Fix libxml2 example to compile ok
.gitignore any *.exe or *.dll

So compiled examples/test suite won't show up anymore.
FB-win32: Build Aspell DLL manually

When building Aspell natively with MinGW (on Win32), I couldn't get it to
produce a dll, despite the use of --enable-shared. (similar to libjasper)
It's probably an issue with the libtool in the MinGW/MSYS setup, or an
issue with the autotools files in the Aspell package itself.

When cross-compiling Aspell from Linux for MinGW, the DLL is produced just
fine though.
Aspell header: Assume the lib is called libaspell.[dll.]a on all systems

When compiling Aspell for MinGW, the produced DLL is called
libaspell-15.dll, the import lib is called libaspell.dll.a and the static
lib is called libaspell.a. Thus we shouldn't #inclib "aspell-15".

Also, the aspell-15.def file can be removed, as the Aspell build process
produces an import lib already.