revert optimization that does not harmonize with realloc() cpp-ports

fix code that is not standard C cpp-ports

port pblock.cpp to pblock.c cpp-ports

port uri.cpp to uri.c cpp-ports

make sure the http stream is finished if headers are sent webdav

check if service SAFs sent a response, terminate connection in case no response was sent webdav

check cgi exit code webdav

(0) -300 -100 -30 -10 -7 +7 +10 +30 +100 tip

mercurial