Populate HTTP warning codes
Includes changing 201 "Server Error" to "Internal Server Error"
List mostly borrowed from here http://www.iana.org/assignments/http-status-codes/http-status-codes.xhtml
418 and 451 also added
Local testing showed a problem with 202 reported as "Server Error" instead of "Accepted"
updated net skeleton
Added #define matrix
Added general example makefile settings
moved hex dumping to skeleton
ws_ssl example
Do not dealloc conn->request in mg_forward()
MONGOOSE_NO_SOCKETPAIR -> NS_DISABLE_SOCKETPAIR
Added guard for MONGOOSE_NO_FILESYSTEM
Added guard for MONGOOSE_NO_FILESYSTEM
Added ALL_PROGS
removed make_settings.mak
Added http client example
Avoid unconditional definition of _LARGEFILE_SOURCE

On some build systems (i.e. Buildroot), _LARGEFILE_SOURCE is defined
at "higher level" as default CFLAG definition.
This fix avoids the following compilation warning:

mongoose-5.4/mongoose.c:52:0: warning: "_LARGEFILE_SOURCE" redefined [enabled by default]
 #define _LARGEFILE_SOURCE       // Enable fseeko() and ftello() functions
 ^
<command-line>:0:0: note: this is the location of the previous definition
Bumping up default timeout from 30 to 300 sec
Make mongoose compile on mingw environment
updated ssl_wrapper
Updated to the latest SSL wrapper
squashed warn in mg_terminate_ssl()
Added MG_RECV event and mg_send_file_data() func