Cygwin fix: Use new #if HAVE_STAT_ST_MTIM
Cygwin fix: Use new #if HAVE_STAT_ST_MTIM

stat.st_mtim doesn't exist under MinGW or Cygwin.

Change-Id: I0d9c81a0529d8d289d84600ed9d1a451e7f1f258

see4ri/lolili,xorware/android_build,xorware/android_build,knone1/platform_manifest,Hybrid-Power/startsync,fallouttester/platform_manifest,pranav01/platform_manifest,xorware/android_build,hagar006/platform_manifest,xorware/android_build,xorware/android_build,ND-3500/platform_manifest,RR-msm7x30/platform_manifest