check for sys/ptem.h fails on SunOS-5.8

[Klaus Zeitler]

while trying to build the readline lib for gdb, autoconf reported
the following problem:

Beginning configuration for readline-4.3 for sparc-sun-solaris2.8

...

checking sys/ptem.h usability... no
checking sys/ptem.h presence... yes
configure: WARNING: sys/ptem.h: present but cannot be compiled
configure: WARNING: sys/ptem.h: check for missing prerequisite headers?
configure: WARNING: sys/ptem.h: proceeding with the preprocessor's result
configure: WARNING:     ## ------------------------------------ ##
configure: WARNING:     ## Report this to address@hidden ##
configure: WARNING:     ## ------------------------------------ ##

My guess is that sys/streams.h is missing in the test program.
That's only a guess cause I don't understand that configure stuff anyway.

-- 
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|  Klaus Zeitler      Lucent Technologies  |
|  Email:             address@hidden  |
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The bogosity meter just pegged.