'Connection' argument in 'Open' was not used, so MySQL host and port were always default ones. Now 'Connection' is treated as 'host:port'.
master compiler compiles with devel
Optimized the size of PNG images. 172KB > 143KB

Used optpng + pngout + deflopt.
Merge pull request #839 from ReneSac/master

Optimized the size of PNG images. 172KB > 143KB
Merge branch 'devel' of git://github.com/Araq/Nimrod
osproc: fix naming inconsistiences
Merge branch 'devel' of https://github.com/Araq/Nimrod into devel
Merge branch 'devel' of git://github.com/Araq/Nimrod
Merge branch 'devel' of git://github.com/Araq/Nimrod
Merge branch 'devel' of https://github.com/Araq/Nimrod into devel
Fix for db_mysql.Open. 'Connection' argument in 'Open' was not used, so MySQL host and port were always default ones. Now 'Connection' is treated as 'host:port'.
osproc: use clone with CLONE_VM on Linux for faster process spawning
osproc: make failed execv an exception (when using fork or clone)

startProcessAuxFork creates a pipe, which is used by a child to pass
an error code if execv fails.
Adds posix.timegm(), brother of posix.mktime().
renamed noStackFrame to asmNoStackFrame
osproc: use push stacktrace:off instead of nostackframe
Documents system.readAll() limitations. Refs #298.
vm2: new representation of registers
fixed opcConv
simple macros work again