Added comment indicating reason for special case in get_pid_list()
Added comment indicating reason for special case in get_pid_list()

djhaskin987/psutil,end18/psutil,huson2012/psutil,peter-hst/psutil,kiranvizru/psutil,tigerneil/psutil,AlanZatarain/psutil,Alwnikrotikz/psutil,vmolsa/psutil,end18/psutil,google-code-export/psutil,creativewild/psutil,marmolu/psutil,anfedorov/psutil,chjwang/psutil,vmolsa/psutil,djhaskin987/psutil,tigerneil/psutil,creativewild/psutil,skyshe/psutil,huson2012/psutil,peter-hst/psutil,kiranvizru/psutil,jucapj/psutil,skyshe/psutil,google-code-export/psutil,AlanZatarain/psutil,kiranvizru/psutil,djhaskin987/psutil,PFZheng/psutil,tigerneil/psutil,stupidcache/psutil,stupidcache/psutil,google-code-export/psutil,tigerneil/psutil,shiva21/psutil,stupidcache/psutil,skyshe/psutil,shiva21/psutil,huson2012/psutil,marmolu/psutil,end18/psutil,nmani1905/psutil,skyshe/psutil,google-code-export/psutil,jucapj/psutil,vmolsa/psutil,zhengzheng/psutil,creativewild/psutil,chjwang/psutil,PFZheng/psutil,nmani1905/psutil,Alwnikrotikz/psutil,vmolsa/psutil,zhengzheng/psutil,kiranvizru/psutil,djhaskin987/psutil,anfedorov/psutil,end18/psutil