illumos gate

There is:

1. missing space between "if" and "type",
2. missing space between "va_list" and "src",
3. missing dot between "va_start()" and "It",

here in the va_arg(9F) man page:

       If there is no actual next argument, or iftype is not compatible with
       the type of the actual next argument (as promoted according to the
       default argument promotions), the behavior is undefined.

       The va_copy() macro saves the state represented by the va_listsrc in
       the va_list dest. The va_list passed as dest should not be initialized
       by a previous call to va_start() It then must be passed to va_end()
       before being reused as a parameter to va_start() or as the dest
       parameter of a subsequent call to va_copy(). The behavior is undefined
       if any of these restrictions are not met.

Also, the code snippet in the EXAMPLES section needs better formatting.