Removed spurious executable bits.

git-svn-id: https://subversion.gsi.de/unigen/trunk@72 642d01a9-996b-0410-8509-9dd94d7a5935
Created a class to contain all the gritty details of PID conversion in one place instead of having every converter repeating near-same code.

git-svn-id: https://subversion.gsi.de/unigen/trunk@73 642d01a9-996b-0410-8509-9dd94d7a5935
Converted urqmd2u to UPIDConverter.

git-svn-id: https://subversion.gsi.de/unigen/trunk@74 642d01a9-996b-0410-8509-9dd94d7a5935
Removed unused PID-conversion code from ampt2u.

git-svn-id: https://subversion.gsi.de/unigen/trunk@75 642d01a9-996b-0410-8509-9dd94d7a5935
evtgen2u: consistently use C++ streams instead of mixing them with cstdio.

git-svn-id: https://subversion.gsi.de/unigen/trunk@76 642d01a9-996b-0410-8509-9dd94d7a5935
Removed unused PID-conversion code from hijing2u.

git-svn-id: https://subversion.gsi.de/unigen/trunk@77 642d01a9-996b-0410-8509-9dd94d7a5935
Converted pluto2u to UPIDConverter.

git-svn-id: https://subversion.gsi.de/unigen/trunk@78 642d01a9-996b-0410-8509-9dd94d7a5935
Converted venus2u to UPIDConverter.

git-svn-id: https://subversion.gsi.de/unigen/trunk@79 642d01a9-996b-0410-8509-9dd94d7a5935
Converted epos2u to UPIDConverter. At the same time, a bit of clean-up in the latter - EPOS, NEXUS and VENUS PID conventions are essentially the same, therefore we only need one conversion table for all three. We call this convention "Werner", after the main author of all three models.

git-svn-id: https://subversion.gsi.de/unigen/trunk@80 642d01a9-996b-0410-8509-9dd94d7a5935
Added therminator2u. Seems okay but needs a little bit more work in order for validation to be completed.

git-svn-id: https://subversion.gsi.de/unigen/trunk@81 642d01a9-996b-0410-8509-9dd94d7a5935
A little bit of clean-up.

git-svn-id: https://subversion.gsi.de/unigen/trunk@82 642d01a9-996b-0410-8509-9dd94d7a5935