c/float_asm: do some operations with floats in ASM
linux/set_proc_name: add a program able to set its command line
linux-flags: remove -Wsuggest-attribute, not supported by gcc 4.6.3
linux/seccomp: fail nicely if siginfo_t->si_syscall is not defined

Ubuntu 12.04 LTS (used by travis-ci.org) provides seccomp.h but does not
define si_syscall in siginfo_t structure in /usr/include/bits/siginfo.h.
windows-flags: use WINCC=false in environment to disable windows build
c/Makefile: only compile Gtk+ programs when not doing cross compilation
Makefile: do not compile linux/ and mbr/ when compiling for Windows
Makefile: remove dot from BIN_EXT

This way, "%$(BIN_EXT)" no longer causes strange things when BIN_EXT is
not defined.
python: support compiling Windows DLL
travis: Configure travis-ci.org continuous integration job