Revert "NO-JIRA: Work-around bug in older cmake, finds static python library instead of shared."

This patch seems to cause various build problems, will put it back when I figure
out what is going wrong.

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r1620424 | aconway | 2014-08-25 16:10:52 -0400 (Mon, 25 Aug 2014) | 13 lines

NO-JIRA: Work-around bug in older cmake, finds static python library instead of shared.

FindPythonLibs on older versions of cmake (observed on cmake-2.6.4-5.el5.4)
sometimes finds the static archive library (.a) before the shared object
library (.so) This is almost never what you want. Newer
versions (e.g. cmake-2.8.12.2-2.fc20.x86_64) explicitly look for the .so first
and look for the .a library second.

This workaround fixes the problem as follows:
- It is a no-op except on Unix platforms that use the .so prefix.
- On those platforms it does a search for .so only first.
- Finally we do a default search for other platforms (or if .so was not found)

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git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@1620738 13f79535-47bb-0310-9956-ffa450edef68