Put header files in /usr/include/opal instead of /usr/include

git-svn-id: svn://svn.code.sf.net/p/opalvoip/code/opal/trunk@31555 023b2edf-31b2-4de3-b41e-bca80c47788f
Merged revision(s) 31520-31563 from opal/branches/v3_14:
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r31560
Assure that whe getting possible media formats via registered transcoders, we use the media options that were provided negotiated and not the global default, thanks Harald Karner. 
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r31559
Fixed small memory leaks, thanks Harald Karner. 
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r31558
Backward compatibility 
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r31557
Fixed compile on some versions of FFMPEG 
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r31556
Added backward compatibility functions 
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r31536
Tided some trace logs.
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r31535
Fixed temporary H.323 gatekeeper use in URI.
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r31534
Fixed assert at end of SIP release, code for consultation transfer could pick up a random connection and call SetConnected() which if timing wrong, could assert or crash it.
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r31532
Fixed help text of Skinny Device Type in OPAL server
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r31531
Tidied status output for media channel options in OpenPhone.
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r31530
Added ability to configure skinny device type in OPAl server.
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r31528
Fixed support for /bin/dash in OPAL server support script
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r31527
Update symbols
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r31526
Additional trace logs for Skinny.
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r31524
Fixed accidental start of default listeners on SIP/H.323 for console apps when listeners started already.
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r31521
Added symbols to force C# code to be linked to DLL


git-svn-id: svn://svn.code.sf.net/p/opalvoip/code/opal/trunk@31564 023b2edf-31b2-4de3-b41e-bca80c47788f