#141 SyncTeX should have an option to write relative path

[rauchzeichen]

In TexLive 2012 and since long time in MikTeX the synctex version wrote now the full path in the *.synctex.gz file.

e.g.:
SyncTeX Version:1
Input:1:/home/user/Dokumente//TeXbriefe/ohnealles/./test.tex
...

But this is not alltimes usefull and due to errors:

1. Using a dual boot PC with Windows and Linux, the shared data have different path on Windows and Linux.
e.g. C:\Daten\privat\... and /media/windows/Daten/privat/....

So, you must all time run pdflatex again to use the inverse search after booting the other operation system.

2. If you have backups of your tex, pdf and *.synctex.gz files under an other path, you cannot use inverse search.

3. There are problems with umlauts in the path name and some viewers.

So please add an option (e.g. -synctex=2) to write relative path again with synctex!

The *.synctex.gz file should look with this new option like this:
SyncTeX Version:1
Input:1: test.tex
...

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