refactor tcp release segments
Multicast refactoring: get rid of double switch
Added unit test for seq_compare
Improved seq numbers unit test & added to jenkins script
Merge branch 'master' into multicast_refactoring
Enforced coding style
Fixed bugs in refactoring of multicast socket. dbg off.
Got rid of redundant initializations
Removed unmantained/useless module "simple_http"...
Added more memory statistics for the mbed arch
Removed hard coded JENKINGS_DEBUG and PICO_MEASURE_STACK symbols
Fixed wrong pointer in mbed arch header
Fixed more minor warnings in mbed arch header
Merge branch 'master' of https://github.com/tass-belgium/picotcp into zmqdev

Conflicts:
	modules/pico_ipv4.c
Merge branch 'zmqdev' of https://github.com/tass-belgium/picotcp into zmqdev
Increased code coverage
Merge branch 'zmqdev' of https://github.com/tass-belgium/picotcp into zmqdev