Fix issue 38: the BSD make does not understand $^, so just spell out the inputs manually.
Fix issue 38: the BSD make does not understand $^, so just spell out the
inputs manually.

* Makefile.in:
  (TARGET_LIB): use $(OBJECTS) instead of $^
  (test/serf_*): replace $^ with explicit list of inputs

pengdu/serf,soufianeEL/serf,stoneCC/serf,zhupan/serf,pengdu/serf,yesoce/serf,stoneCC/serf,zhengcq315/serf,KyleSanderson/serf,SirJson/serf,x-clone/serf,yesoce/serf,alex1818/serf,zhupan/serf,zhengcq315/serf,soufianeEL/serf,KyleSanderson/serf,yesoce/serf,google-code-export/serf,lazysoez/serf,KyleSanderson/serf,zhupan/serf,google-code-export/serf,pengdu/serf,x-clone/serf,lazysoez/serf,yesoce/serf,soufianeEL/serf,x-clone/serf,SirJson/serf,stoneCC/serf,alex1818/serf,google-code-export/serf,KyleSanderson/serf,alex1818/serf,zhengcq315/serf,zhupan/serf,google-code-export/serf,soufianeEL/serf,SirJson/serf,lazysoez/serf,stoneCC/serf,lazysoez/serf,SirJson/serf,pengdu/serf,x-clone/serf,alex1818/serf,zhengcq315/serf