initsignal(): Added SIGXCPU and SIGXFSZ.  Left in the definitions for SIGCPU and SIGFSZ but we're (Jeremy and I) are actually unsure whether these were typos or if there are systems that use these alternate names.  We've checked Solaris, SunOS, and IRIX; they contain only the SIGX* names.
initsignal(): Added SIGXCPU and SIGXFSZ.  Left in the definitions for
SIGCPU and SIGFSZ but we're (Jeremy and I) are actually unsure whether
these were typos or if there are systems that use these alternate
names.  We've checked Solaris, SunOS, and IRIX; they contain only the
SIGX* names.

sk-/python2.7-type-annotator,sk-/python2.7-type-annotator,sk-/python2.7-type-annotator