build regression 0.13 -> 0.14

[anonymous]

from d.thomas@…

as tested on FreeBSD 4.11 / gcc version 2.95.4 20020320 [FreeBSD]
the "linker input file unused because linking not done" messages can
be ignored
see ​http://sourceforge.net/tracker/index.php?
func=detail&aid=1521046&group_id=125852&atid=703942
there's a bug report for solaris10 which may be the same

running make after ./configure

lib-ssh2-0.13
===========================================
=======================
root@maya# make
gcc -o channel.o channel.c -c -g -O2 -I/usr/local/include -I/usr/
include -Wall -g -I../include/ -fPIC
gcc -o comp.o comp.c -c -g -O2 -I/usr/local/include -I/usr/include
-Wall -g -I../include/ -fPIC
...
<success>

lib-ssh2-0.14
===========================================
=======================
root@maya# make
gcc -o channel.o channel.c -c -g -O2 /usr/local/include -I/usr/include
-Wall -I../include/ -fPIC
gcc: cannot specify -o with -c or -S and multiple compilations
* Error code 1