rename some memory pool
rename buffer and string
rename stream
rename gstream
rebuild the memory comment and fix some bug
fix header bug
fix some compile warning
fix some compile warning for type conversion
fix int conversion compile warning
add polarssl headers and library
using Werror for mac
fix some compile warning and error for ios arm64
add libpolarssl for mingw x86
add Werror for linux
add polarssl for linux x64
rename string cache to string pool
rename transfer to transfer pool
format some stream struct members
modify static stream interfaces comments
improve static stream safe