rerun ignores platform, when specified via run command

[sahilseth]

For example if we run:

flowr run x=fastq_bam_bwa fqs1=$fqs1 fqs2=$fqs2 samplename=samp execute=TRUE platform=local rerun_wd=output/runs/fastq_bam_bwa-samp-20151201-18-07-17-aiJFUNjt start_from=aln1

This fails with the error:

-> Flow is being processed. Track it from cmd line using:
flowr status x=/Users/sahilseth/Dropbox2/Dropbox/public/flow-r/fastq_bam/output/runs/fastq_bam_bwa-samp-20151201-18-07-17-aiJFUNjt
OR from R using:
status(x='/Users/sahilseth/Dropbox2/Dropbox/public/flow-r/fastq_bam/output/runs/fastq_bam_bwa-samp-20151201-18-07-17-aiJFUNjt')
  |                                                                      |   0%sh: msub: command not found
Error in system(cmd, intern = TRUE) : error in running command
Error in x$value : $ operator is invalid for atomic vectors

[sahilseth]

This has been fixed