[Samtools] Crash bwa-mem Unicode tmp

Created from crash report 2069.

1. Create a folder "苍天垂泪".
2. Open Preferences.
3. Open the "Directories" setting, set the created folder as "Temporary files".
4. Click OK. 
5. Run Tools->NGS data analysis->Map reads to reference... The "Map NGS Reads to Reference" dialog appears.
6. Set:
   1. Mapping tool: BWA-MEM,
   2. Reference sequence: data/samples/Genbank/CVU55762.gb (dir must be writable),
   3. Short reads:
      1. _common_data/cmdline/custom-script-worker-functions/fastq_quality_trimmer/fastq1_res1.fastq,
      2. _common_data/cmdline/custom-script-worker-functions/fastq_quality_trimmer/fastq1_res2.fastq.
7. Click Start. The "DNA Assembly" dialog appears:

   These files have the incompatible format:
   
   C:/Users/User/ugene/data/samples/Genbank/CVU55762.gb [genbank]
   
   Do you want to convert the files and run the aligner?
   

8. Click Yes. The "Dna assembly" task has started.
   Expected: the task completed successfully, UGENE generated a non-empty output file (data/samples/Genbank/CVU55762.sam by default).
   Current state: crash.