Changes applied to checkout of branch petra (rev 33 = rev31 in trunk)
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Remove x permission from 56 text files

Convert 2 text files form DOS to Unix format

concoutput.f90:

Reinitialization of grid
- convert loops to f90 array assignments (there were even unnecessary multiple loops for creceptor(i,ks)=0. over kp=1,maxpointspec_act, and loops in wrong order!)
- add reinitialisation of wetgridunc and drygridunc if new variable ldep_incr true

concoutput_nest.f90:

Reinitialization of grid
- convert loops to f90 array assignments (there were even unnecessary multiple loops for creceptor(i,ks)=0. over kp=1,maxpointspec_act, and loops in wrong order!)
- add reinitialisation of wetgridunc and drygridunc if new variable ldep_incr true
- remove reinitalisation of creceptor, this is alread done in concoutput.f90

readcommand.f90, skplin.f90, com_mod.f90:

- add ldep_incr to namelist command in readcommand.f90, intialise as false
- read ldep_incr normally but catch exception if not present, then use default
- for this purpose catch EOF also in skplin.f90
- in readcommand.f90, add spaces for logical operators
- in com_mod.f90, add ldep_incr, and make all variable names lowercase, add GNU

FLEXPART.f90, readpaths.f90: eliminate pathname from calling readpaths, it is 
already in module com. Eliminate commented formal argument from readpaths.f90

par_mod.f90: nxhsift=0 also for ECMWF, seems to be needed

writeheader_text.f90, writeheader.f90, writeheader_nest.f90: introduce version string length output, enclose character output in quotes in text output, change name of header_text files to *.txt