fix dependencies of VHDL tasks
ignore *.tap files
add Sublime Text workspace files to gitignore
build libreconos_host.a
single_pendulum_vhdl can skip memory operations for performance evaluation
cleanup single_pendulum_simple.c
add libc6-dev-i386 dependency to README.md

It is required for Vivado HLS.
prepare single_pendulum_simple.c for 64-bit systems
fix bug
fix bug
set --without-reconos by default, if running on the host
don't allow more than one thread for 64-bit systems