Implemented get_memory_percent().
Implemented get_memory_percent().

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