typo: sigInstall with lowercase i in thread.cpp

[test . nospam]

thread.h:     friend void sigInstall(int signo);
/doc/man3/ost_PosixThread.3cc:.RI "void \fBsigInstall\fP (int signo)"
/doc/man3/ost_PosixThread.3cc:.SS "void sigInstall (int signo)\fC [friend]\fP"

typos in thread.cpp:

/src/thread.cpp:void siginstall(int);
/src/thread.cpp:               siginstall(SIGHUP);
/src/thread.cpp:               siginstall(SIGALRM);
/src/thread.cpp:               siginstall(SIGPIPE);
/src/thread.cpp:               siginstall(SIGABRT);
/src/thread.cpp:void siginstall(int signo)

regards

nospam